https://this-week-in-rust.org/2026-09-09T00:00:00-04:002026-09-09T00:00:00-04:002026-09-09T00:00:00-04:00TWiR Contributorstag:this-week-in-rust.org,2026-09-09:/blog/2026/09/09/this-week-in-rust-668/

<p>Hello and welcome to another issue of <em>This Week in Rust</em>! <a href="https://www.rust-lang.org/">Rust</a> is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at <a href="https://bsky.app/profile/thisweekinrust.bsky.social">@thisweekinrust.bsky.social</a> on Bluesky or <a href="https://mastodon.social/@thisweekinrust">@ThisWeekinRust</a> on mastodon.social …</p>

<p>Hello and welcome to another issue of <em>This Week in Rust</em>! <a href="https://www.rust-lang.org/">Rust</a> is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at <a href="https://bsky.app/profile/thisweekinrust.bsky.social">@thisweekinrust.bsky.social</a> on Bluesky or <a href="https://mastodon.social/@thisweekinrust">@ThisWeekinRust</a> on mastodon.social, or <a href="https://github.com/rust-lang/this-week-in-rust">send us a pull request</a>. Want to get involved? <a href="https://github.com/rust-lang/rust/blob/main/CONTRIBUTING.md">We love contributions</a>.</p> <p><em>This Week in Rust</em> is openly developed <a href="https://github.com/rust-lang/this-week-in-rust">on GitHub</a> and archives can be viewed at <a href="https://this-week-in-rust.org/">this-week-in-rust.org</a>. If you find any errors in this week's issue, <a href="https://github.com/rust-lang/this-week-in-rust/pulls">please submit a PR</a>.</p> <p>Want TWIR in your inbox? <a href="https://this-week-in-rust.us11.list-manage.com/subscribe?u=fd84c1c757e02889a9b08d289&amp;id=0ed8b72485">Subscribe here</a>.</p> <h2 id="updates-from-rust-community"><a class="toclink" href="#updates-from-rust-community">Updates from Rust Community</a></h2> <!-- Dear community contributors: Please read README.md for guidance on submissions. Each submitted link should be of the form: * [Title of the linked Page](https://example.com/my_article) If you add a link to a non-text content please prefix it with `[video]` or `[audio]`: * [video] [Title of the linked video](https://example.com/my_video_article) * [audio] [Title of the linked audio file](https://example.com/my_podcast) If you don't know which category to use, feel free to submit a PR anyway and just ask the editors to select the category. --> <h3 id="official"><a class="toclink" href="#official">Official</a></h3> <ul> <li><a href="https://blog.rust-lang.org/2026/09/07/rust-debugging-survey-2026-results/">Rust debugging survey 2026 results</a></li> </ul> <h3 id="foundation"><a class="toclink" href="#foundation">Foundation</a></h3> <ul> <li><a href="https://rustfoundation.org/media/rust-cpp-interop-initiative-progress-update/">Rust/C++ Interop Initiative: Progress Update, September 2026</a></li> </ul> <h3 id="newsletters"><a class="toclink" href="#newsletters">Newsletters</a></h3> <ul> <li><a href="https://rust-trends.com/newsletter/rust-1-98-ships-as-the-supply-chain-gets-tested/">Rust Trends Issue 81 - Rust 1.98 Ships as the Supply Chain Gets Tested</a></li> </ul> <h3 id="projecttooling-updates"><a class="toclink" href="#projecttooling-updates">Project/Tooling Updates</a></h3> <ul> <li><a href="https://rustls.dev/blog/2026-09-08-a-decade-of-rustls/">A Decade of Rustls</a></li> </ul> <h3 id="observationsthoughts"><a class="toclink" href="#observationsthoughts">Observations/Thoughts</a></h3> <ul> <li><a href="https://kerkour.com/rust-microcontrollers">Microcontrollers with good support for Rust</a></li> <li><a href="https://teaql.io/blog/musicbrainz-rust-orm-benchmark/">What Does a Governed Data Runtime Cost? TeaQL vs Diesel and SeaORM on MusicBrainz</a></li> <li><a href="https://lwn.net/SubscriberLink/1091015/5009546caa744c57/">Stabilizing Rust's never type</a></li> <li><a href="https://pid7.com/blog/searching-150gb-text-per-second/">Searching through 150 GiB of Text per Second with SIMD</a></li> <li><a href="https://levelup.gitconnected.com/nine-rules-for-compile-time-work-with-rust-const-fn-part-2-76ccd0e8a965">Nine Rules for Compile-Time Work with Rust <code>const fn</code>: Parse files, build tables, and catch mistakes … without a build script (Part 2)</a></li> <li><a href="https://cel.cs.brown.edu/blog/design-space-async-await/">A Design Space Exploration of Async/Await</a></li> <li><a href="https://ettolrach.com/blog/rust_when_empty_isnt_bottom.html">Rust: When Empty Isn't Bottom</a></li> </ul> <h3 id="rust-walkthroughs"><a class="toclink" href="#rust-walkthroughs">Rust Walkthroughs</a></h3> <ul> <li><a href="https://www.debugdiary.dev/log/rust-simd128-what-changed-in-webassembly">What Rust's +simd128 Actually Changed in My WebAssembly</a></li> <li><a href="https://blog.sheerluck.dev/posts/understanding-rust-control-flow-by-building-a-number-guessing-game/">Rust Control Flow in Practice - Build a Number Guessing Game</a></li> <li><a href="https://hackmd.io/@WorldSEnder/Hkyqni6Ofl">Unsizing unsized values</a></li> <li><a href="https://quietism.art/posts/game-architecture/">Game architecture</a></li> <li><a href="https://developer.nvidia.com/blog/introducing-cuda-rust-two-tracks-for-writing-gpu-kernels/">Introducing CUDA Rust: Two Tracks for Writing GPU Kernels</a></li> <li><a href="https://cetra3.github.io/blog/state-of-allocators-2026-part-2/">The State of Allocators in 2026 - 6 Months Later</a></li> <li><a href="https://sofiabelen.github.io/projects/visualizing-rusts-vtables-how-dyn-trait-works-in-memory/">Visualizing Rust's Vtables: How dyn Trait Works In Memory</a></li> <li><a href="https://bamburac.com/blog/chess-engine/">Safely generating legal chess moves at 475,000,000 nodes/s</a></li> <li><a href="https://sam.dev/blog/gearhash-on-arm64">Speeding up gearhash on ARM64 (2× faster)</a></li> <li><a href="https://ochagavia.nl/blog/lets-build-a-compressor-from-scratch/">Let's build a compressor from scratch</a></li> <li><a href="https://bensimms.moe/reverse-engineering-scooter/">Reverse engineering my e-scooter and rewriting the firmware in rust</a></li> <li><a href="https://hemomorphic.alexblood.net/posts/gloo-yew-for-persistent-webapp-state/">Gloo + Yew for persistent webapp state</a></li> </ul> <h3 id="miscellaneous"><a class="toclink" href="#miscellaneous">Miscellaneous</a></h3> <ul> <li><a href="https://github.com/kevincouton/awesome-rust-migrations">Awesome Rust Migrations</a></li> </ul> <h2 id="crate-of-the-week"><a class="toclink" href="#crate-of-the-week">Crate of the Week</a></h2> <p>This week's crate is <a href="https://github.com/roeeshoshani/tokio_rcu">tokio-rcu</a>, a user-space RCU implementation specifically built around the semantics of async rust and tokio.</p> <p>Thanks to <a href="https://users.rust-lang.org/t/crate-of-the-week/2704/1662">Roee Shoshani</a> for the self-suggestion!</p> <p><a href="https://users.rust-lang.org/t/crate-of-the-week/2704">Please submit your suggestions and votes for next week</a>!</p> <h2 id="calls-for-testing"><a class="toclink" href="#calls-for-testing">Calls for Testing</a></h2> <p>An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.</p> <p>If you are a feature implementer and would like your RFC to appear in this list, add a <code>call-for-testing</code> label to your RFC along with a comment providing testing instructions and/or guidance on which aspect(s) of the feature need testing.</p> <h5 id="cargo"><a class="toclink" href="#cargo"><a href="https://github.com/rust-lang/cargo/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Cargo</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/cargo/issues/14136">Tracking Issue for checksum freshness</a></li> </ul> <p><em>No calls for testing were issued this week by <a href="https://github.com/rust-lang/rust/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Rust</a>, <a href="https://github.com/rust-lang/rustup/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Rustup</a> or <a href="https://github.com/rust-lang/rfcs/issues?q=label%3Acall-for-testing%20state%3Aopen">Rust language RFCs</a>.</em></p> <p><a href="https://github.com/rust-lang/this-week-in-rust/issues">Let us know</a> if you would like your feature to be tracked as a part of this list.</p> <h3 id="rfcs"><a class="toclink" href="#rfcs"><a href="https://github.com/rust-lang/rfcs/issues?q=label%3Acall-for-testing">RFCs</a></a></h3> <h3 id="rust"><a class="toclink" href="#rust"><a href="https://github.com/rust-lang/rust/labels/call-for-testing">Rust</a></a></h3> <h3 id="rustup"><a class="toclink" href="#rustup"><a href="https://github.com/rust-lang/rustup/labels/call-for-testing">Rustup</a></a></h3> <p>If you are a feature implementer and would like your RFC to appear on the above list, add the new <code>call-for-testing</code> label to your RFC along with a comment providing testing instructions and/or guidance on which aspect(s) of the feature need testing.</p> <h2 id="call-for-participation-projects-and-speakers"><a class="toclink" href="#call-for-participation-projects-and-speakers">Call for Participation; projects and speakers</a></h2> <h3 id="cfp-projects"><a class="toclink" href="#cfp-projects">CFP - Projects</a></h3> <p>Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!</p> <p>Some of these tasks may also have mentors available, visit the task page for more information.</p> <!-- CFPs go here, use this format: * [project name - title of issue](URL to issue) --> <ul> <li><a href="https://github.com/lacs-project/sysknife/issues/345">sysknife - action_reference_doc_is_current prints two 44 KB documents instead of the line that differs</a></li> <li><a href="https://github.com/lacs-project/sysknife/issues/327">sysknife - packages/setup claims Node 18 support, and Node 18 has been end-of-life since 2025-04-30</a></li> <li><a href="https://github.com/lacs-project/sysknife/issues/356">sysknife - cargo test fails intermittently on main: a test sets a process-global env var</a></li> </ul> <!-- or if none - *No Calls for participation were submitted this week.* --> <p>If you are a Rust project owner and are looking for contributors, please submit tasks <a href="https://github.com/rust-lang/this-week-in-rust?tab=readme-ov-file#call-for-participation-guidelines">here</a> or through a <a href="https://github.com/rust-lang/this-week-in-rust">PR to TWiR</a> or by reaching out on <a href="https://bsky.app/profile/thisweekinrust.bsky.social">Bluesky</a> or <a href="https://mastodon.social/@thisweekinrust">Mastodon</a>!</p> <h3 id="cfp-events"><a class="toclink" href="#cfp-events">CFP - Events</a></h3> <p>Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.</p> <!-- CFPs go here, use this format: * [**event name**](URL to CFP)| Date CFP closes in YYYY-MM-DD | city,state,country | Date of event in YYYY-MM-DD --> <!-- or if none - *No Calls for papers or presentations were submitted this week.* --> <ul> <li><em>No Calls for papers or presentations were submitted this week.</em></li> </ul> <p>If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a <a href="https://github.com/rust-lang/this-week-in-rust">PR to TWiR</a> or by reaching out on <a href="https://bsky.app/profile/thisweekinrust.bsky.social">Bluesky</a> or <a href="https://mastodon.social/@thisweekinrust">Mastodon</a>!</p> <h2 id="updates-from-the-rust-project"><a class="toclink" href="#updates-from-the-rust-project">Updates from the Rust Project</a></h2> <p>613 pull requests were <a href="https://github.com/search?q=is%3Apr+org%3Arust-lang+is%3Amerged+merged%3A2026-09-01..2026-09-08">merged in the last week</a></p> <h4 id="compiler"><a class="toclink" href="#compiler">Compiler</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust/pull/161795">always rerun if we normalize local opaques</a></li> <li><a href="https://github.com/rust-lang/rust/pull/162047">optimize empty token streams</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161850">store LiveLoans more densely packed</a></li> <li><a href="https://github.com/rust-lang/rust/pull/162422">use IndexVec instead of BTreeMap for polonius variances</a></li> </ul> <h4 id="library"><a class="toclink" href="#library">Library</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust/pull/161893">add custom allocator support to <code>(try_)map</code> on <code>UniqueArc</code> and <code>UniqueRc</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/162285">box: fixup <code>map/try_map</code> deallocate calls</a></li> <li><a href="https://github.com/rust-lang/rust/pull/160534">stabilize smart pointer map functions</a></li> </ul> <h4 id="cargo_1"><a class="toclink" href="#cargo_1">Cargo</a></h4> <ul> <li><a href="https://github.com/rust-lang/cargo/pull/17441"><code>docs(lints)</code>: how to configure Cargo lints</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17425"><code>docs(trim-paths)</code>: add limitations and polish</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17433"><code>docs(trim-paths)</code>: workspace remap begins with <code>.</code></a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17437"><code>fix(git)</code>: Apply pr hint to git-fetch-with-cli</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17436"><code>fix(git)</code>: Make PR dep note cloer to our style guide</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17429"><code>fix(git)</code>: Simplify error message</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17422"><code>fix(git)</code>: Use git's 429 retry, when available</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17428"><code>fix(parser)</code>: Resolve theoretical use-after-free</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17410">avoid passing search path (-L) args when they are passed as --extern</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17430">docs: switch from "target triple" to "target tuple"</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17362">fix relative symlink handling in <code>write_atomic</code></a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17432">fix(trim-paths)!: limit options to <code>none|object|all</code></a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17424">fix(trim-paths)!: remove default scope from release profile</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17450">fixed stale comment about fingerprint checking method</a></li> </ul> <h4 id="rustdoc"><a class="toclink" href="#rustdoc">Rustdoc</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust/pull/151618">add <code>--print</code> option</a></li> </ul> <h4 id="rustfmt"><a class="toclink" href="#rustfmt">Rustfmt</a></h4> <ul> <li><a href="https://github.com/rust-lang/rustfmt/pull/7017">fix non-idempotent block doc comment closer rewrite</a></li> <li><a href="https://github.com/rust-lang/rustfmt/pull/7089">prevent infinite loops when parsing items from <code>cfg_select!</code> arms</a></li> </ul> <h4 id="clippy"><a class="toclink" href="#clippy">Clippy</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17653"><code>unnecessary_self_imports</code>: lint nested imports</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17490"><code>legacy_numeric_constants</code>: make fixes machine-applicable</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17648"><code>std_instead_of_core</code>: don't suggest a path that does not resolve</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17583"><code>useless_conversion</code>: ignore <code>From::from</code> in generated code</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/16595"><code>useless_format</code>: improve suggestion</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17681"><code>regex_creation_in_loops</code>: check MIR loop structure</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17504">check that intra-doc links are not broken</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/16786">detect integration tests in <code>is_in_test</code></a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17049">do not trigger <code>integer_division_remainder_used</code> in macros</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17644">improve <code>map_unwrap_or</code> lint to support <code>map(f).unwrap_or_default()</code></a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17502">move the <code>clippy_ci_panic_test</code> integration into a regular test</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17665">respect inline allows in <code>needless_pass_by_value</code></a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/14689">soft rename <code>clippy::all</code> to <code>clippy::default</code></a></li> </ul> <h4 id="rust-analyzer"><a class="toclink" href="#rust-analyzer">Rust-Analyzer</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23262">add diagnostics for missing bodies for free and associated items</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23292">fix <code>NamedTempFile</code> constructors</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23249">accept Self as non-leading path segment in attribute paths</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23246">allow inner attributes on blocks in tuple expressions</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/22662">avoid type unification errors in term search</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23270">fix handling of <code>#[unsafe()]</code> attrs without inner meta</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23163">fix parsing of <code>self:</code>: in fn param list</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23279">hover <code>1f64</code> use float instead of integer</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23297">follow symlinks when scanning the sysroot for proc-macro dylibs</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23248">install cargo tools with locked dependencies</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23271">merge <code>hir_def::hir::Expr::Unsafe</code> into <code>Expr::Block</code></a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23266">render const value in completions label details</a></li> </ul> <h3 id="rust-compiler-performance-triage"><a class="toclink" href="#rust-compiler-performance-triage">Rust Compiler Performance Triage</a></h3> <p>This week we've hit quite a few regressions, both expected and unexpected. One of them has already been fixed, with fixes for a few others being discussed. One big improvement comes from caching the sanitizer set in <code>Session</code>, which fixes a large regression from last week. A few minor improvements landed, including a 75% reduction in memory usage while compiling <code>bevy_render</code> with the next trait solver.</p> <p>Triage done by <strong>@JonathanBrouwer</strong>. Revision range: <a href="https://perf.rust-lang.org/?start=5321a4f40c957cf3587c055e77461febc2ebc865&amp;end=656a9da186dacaf3bf8f7f7296a825d256cb4ae3&amp;absolute=false&amp;stat=instructions%3Au">5321a4f4..656a9da1</a></p> <p><strong>Summary</strong>:</p> <table> <thead> <tr> <th style="text-align: center;">(instructions:u)</th> <th style="text-align: center;">mean</th> <th style="text-align: center;">range</th> <th style="text-align: center;">count</th> </tr> </thead> <tbody> <tr> <td style="text-align: center;">Regressions ❌ <br /> (primary)</td> <td style="text-align: center;">0.5%</td> <td style="text-align: center;">[0.1%, 1.3%]</td> <td style="text-align: center;">121</td> </tr> <tr> <td style="text-align: center;">Regressions ❌ <br /> (secondary)</td> <td style="text-align: center;">0.6%</td> <td style="text-align: center;">[0.1%, 10.3%]</td> <td style="text-align: center;">106</td> </tr> <tr> <td style="text-align: center;">Improvements ✅ <br /> (primary)</td> <td style="text-align: center;">-0.6%</td> <td style="text-align: center;">[-1.9%, -0.1%]</td> <td style="text-align: center;">63</td> </tr> <tr> <td style="text-align: center;">Improvements ✅ <br /> (secondary)</td> <td style="text-align: center;">-0.6%</td> <td style="text-align: center;">[-2.4%, -0.1%]</td> <td style="text-align: center;">65</td> </tr> <tr> <td style="text-align: center;">All ❌✅ (primary)</td> <td style="text-align: center;">0.1%</td> <td style="text-align: center;">[-1.9%, 1.3%]</td> <td style="text-align: center;">184</td> </tr> </tbody> </table> <p>3 Regressions, 2 Improvements, 8 Mixed; 6 of them in rollups 33 artifact comparisons made in total</p> <p><a href="https://github.com/rust-lang/rustc-perf/blob/a953e9c59b18feffa9dc06bee4ab30ad5a5700e8/triage/2026/2026-09-07.md">Full report here</a></p> <h2 id="calls-for-testing_1"><a class="toclink" href="#calls-for-testing_1">Calls for Testing</a></h2> <p>An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.</p> <p>If you are a feature implementer and would like your RFC to appear in this list, add a <code>call-for-testing</code> label to your RFC along with a comment providing testing instructions and/or guidance on which aspect(s) of the feature need testing.</p> <h5 id="cargo_2"><a class="toclink" href="#cargo_2"><a href="https://github.com/rust-lang/cargo/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Cargo</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/cargo/issues/14136">Tracking Issue for checksum freshness</a></li> </ul> <p><em>No calls for testing were issued this week by <a href="https://github.com/rust-lang/rust/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Rust</a>, <a href="https://github.com/rust-lang/rustup/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Rustup</a> or <a href="https://github.com/rust-lang/rfcs/issues?q=label%3Acall-for-testing%20state%3Aopen">Rust language RFCs</a>.</em></p> <p><a href="https://github.com/rust-lang/this-week-in-rust/issues">Let us know</a> if you would like your feature to be tracked as a part of this list.</p> <hr> <h3 id="approved-rfcs"><a class="toclink" href="#approved-rfcs"><a href="https://github.com/rust-lang/rfcs/commits/master">Approved RFCs</a></a></h3> <p>Changes to Rust follow the Rust <a href="https://github.com/rust-lang/rfcs#rust-rfcs">RFC (request for comments) process</a>. These are the RFCs that were approved for implementation this week:</p> <ul> <li><a href="https://github.com/rust-lang/rfcs/pull/3958">Rustdoc LaTeX math</a></li> <li><a href="https://github.com/rust-lang/rfcs/pull/3485">RFC: Cargo feature descriptions</a></li> <li><a href="https://github.com/rust-lang/rfcs/pull/3999">Change <code>i686-pc-windows-msvc</code> from Tier 1 with host tools =&gt; Tier 1 without host tools</a></li> </ul> <h3 id="final-comment-period"><a class="toclink" href="#final-comment-period">Final Comment Period</a></h3> <p>Every week, <a href="https://www.rust-lang.org/team.html">the team</a> announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.</p> <h4 id="tracking-issues-prs"><a class="toclink" href="#tracking-issues-prs">Tracking Issues &amp; PRs</a></h4> <h5 id="rust_1"><a class="toclink" href="#rust_1"><a href="https://github.com/rust-lang/rust/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Rust</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/rust/pull/161385">riscv: stabilize 'd' and 'f' target features</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161583">x86: on targets that requires SSE, use those registers for ABI</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161430">Re-export <code>core::fmt::NumBuffer</code> in <code>alloc</code> (and <code>std</code>)</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161005">fix: unfulfilled nested dead code lint</a></li> <li><a href="https://github.com/rust-lang/rust/pull/162160">turn aligned-in-packed error into lint</a></li> <li><a href="https://github.com/rust-lang/rust/pull/158186">Guarantee 8 bytes of alignment of RawWakerVTable</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161312">libtest: Allow passing --test-threads and --color multiple times, with later arguments overriding earlier</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161520">Stabilize <code>core::mem::DropGuard</code></a></li> </ul> <h5 id="cargo_3"><a class="toclink" href="#cargo_3"><a href="https://github.com/rust-lang/cargo/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Cargo</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/cargo/pull/17388">fix(install): use packaged lockfile by default</a></li> </ul> <h5 id="language-reference"><a class="toclink" href="#language-reference"><a href="https://github.com/rust-lang/reference/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Language Reference</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/reference/pull/2320">UB does not time travel</a></li> </ul> <h5 id="unsafe-code-guidelines"><a class="toclink" href="#unsafe-code-guidelines"><a href="https://github.com/rust-lang/unsafe-code-guidelines/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Unsafe Code Guidelines</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/unsafe-code-guidelines/issues/621">Can references inside an enum transiently set an invalid enum discriminant?</a></li> </ul> <p><em>No Items entered Final Comment Period this week for <a href="https://github.com/rust-lang/rfcs/issues?q=state%3Aopen%20label%3Afinal-comment-period%20state%3Aopen">Rust RFCs</a>, <a href="https://github.com/rust-lang/compiler-team/issues?q=label%3Amajor-change%20label%3Afinal-comment-period%20state%3Aopen">Compiler Team</a>, <a href="https://github.com/rust-lang/lang-team/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Language Team</a> or <a href="https://github.com/rust-lang/leadership-council/issues?q=state%3Aopen%20label%3Afinal-comment-period%20state%3Aopen">Leadership Council</a>.</em> Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.</p> <h3 id="new-and-updated-rfcs"><a class="toclink" href="#new-and-updated-rfcs"><a href="https://github.com/rust-lang/rfcs/pulls">New and Updated RFCs</a></a></h3> <ul> <li><em>No New or Updated RFCs were created this week.</em></li> </ul> <h2 id="upcoming-events"><a class="toclink" href="#upcoming-events">Upcoming Events</a></h2> <p>Rusty Events between 2026-09-09 - 2026-10-07 🦀</p> <h3 id="virtual"><a class="toclink" href="#virtual">Virtual</a></h3> <ul> <li>2026-09-09 | Virtual (Cardiff, UK) | <a href="https://www.meetup.com/rust-and-c-plus-plus-in-cardiff/events/">Rust and C++ Cardiff</a><ul> <li><a href="https://www.meetup.com/rust-and-c-plus-plus-in-cardiff/events/316283651/"><strong>Operating Systems Book Club: Address spaces and Memory API</strong></a></li> </ul> </li> <li>2026-09-10 | Virtual | <a href="https://luma.com/rust-maven">Rust 🦀 Maven</a><ul> <li><a href="https://luma.com/rfbzk3ae"><strong>Solving Real-World Planning Problems in Rust with SolverForge</strong></a></li> </ul> </li> <li>2026-09-10 | Virtual (Berlin, DE) | <a href="https://www.meetup.com/rust-berlin">Rust Berlin</a><ul> <li><a href="https://www.meetup.com/rust-berlin/events/315691423/"><strong>Rust Hack and Learn</strong></a></li> </ul> </li> <li>2026-09-10 | Virtual (Nürnberg, DE) | <a href="https://www.meetup.com/rust-noris">Rust Nuremberg</a><ul> <li><a href="https://www.meetup.com/rust-noris/events/315619611/"><strong>Rust Nürnberg online</strong></a></li> </ul> </li> <li>2026-09-15 | Virtual (Washington, DC, US) | <a href="https://www.meetup.com/rustdc">Rust DC</a><ul> <li><a href="https://www.meetup.com/rustdc/events/fhvsztyjcmbtb/"><strong>Mid-month Rustful</strong></a></li> </ul> </li> <li>2026-09-16 | Hybrid (Vancouver, CA) | <a href="https://www.meetup.com/vancouver-rust">Vancouver Rust</a><ul> <li><a href="https://www.meetup.com/vancouver-rust/events/314233757/"><strong>Building a Rust GPU driver in the Linux kernel</strong></a></li> </ul> </li> <li>2026-09-17 | Hybrid (Seattle, WA, US) | <a href="https://www.meetup.com/join-srug">Seattle Rust User Group</a><ul> <li><a href="https://www.meetup.com/seattle-rust-user-group/events/315635881/"><strong>September, 2026 SRUG (Seattle Rust User Group) Meetup</strong></a></li> </ul> </li> <li>2026-09-18 | Virtual | <a href="https://luma.com/rust-girona">Rust Girona</a><ul> <li><a href="https://luma.com/ibaxicxv"><strong>Sessió setmanal de codificació / Weekly coding session</strong></a></li> </ul> </li> <li>2026-09-20 | Virtual (Dallas, TX, US) | <a href="https://www.meetup.com/dallasrust">Dallas Rust User Meetup</a><ul> <li><a href="https://www.meetup.com/dallasrust/events/316133974/"><strong>Rust Deep Learning: Third Sunday</strong></a></li> </ul> </li> <li>2026-09-22 | Virtual (Dallas, TX, US) | <a href="https://www.meetup.com/dallasrust">Dallas Rust User Meetup</a><ul> <li><a href="https://www.meetup.com/dallasrust/events/310254773/"><strong>Fourth Tuesday Rust Bookclub</strong></a></li> </ul> </li> <li>2026-09-24 | Virtual (Berlin, DE) | <a href="https://www.meetup.com/rust-berlin/events/">Rust Berlin</a><ul> <li><a href="https://www.meetup.com/rust-berlin/events/315907979/"><strong>Rust Hack and Learn</strong></a></li> </ul> </li> <li>2026-09-24 | Virtual (Charlottesville, VA, US) | <a href="https://www.meetup.com/charlottesville-rust-meetup/events/">Charlottesville Rust Meetup</a><ul> <li><a href="https://www.meetup.com/charlottesville-rust-meetup/events/316460694/"><strong>Rust Cells — Interior Mutability from Rust Core to Tock OS</strong></a></li> </ul> </li> <li>2026-09-29 | Virtual (London, UK) | <a href="https://www.meetup.com/women-in-rust/events/">Women in Rust</a><ul> <li><a href="https://www.meetup.com/women-in-rust/events/315691730/"><strong>Lunch &amp; Learn: Crates, Tips &amp; Tricks Lightning Talks - Bring your ideas!</strong></a></li> </ul> </li> <li>2026-10-02 | Virtual | <a href="https://luma.com/rust-girona">Rust Girona</a><ul> <li><a href="https://luma.com/yqxvguts"><strong>Sessió setmanal de codificació / Weekly coding session</strong></a></li> </ul> </li> <li>2026-10-04 | Virtual (Dallas, TX, US) | <a href="https://www.meetup.com/dallasrust/events/">Dallas Rust User Meetup</a><ul> <li><a href="https://www.meetup.com/dallasrust/events/316134009/"><strong>Rust Deep Learning: First Sunday</strong></a></li> </ul> </li> <li>2026-10-06 | Virtual (London, UK) | <a href="https://www.meetup.com/women-in-rust/events/">Women in Rust</a><ul> <li><a href="https://www.meetup.com/women-in-rust/events/315773044/"><strong>👋 Community Catch Up</strong></a></li> </ul> </li> <li>2026-10-07 | Virtual (Indianapolis, IN, US) | <a href="https://www.meetup.com/indyrs/events/">Indy Rust</a><ul> <li><a href="https://www.meetup.com/indyrs/events/wqzhftyjcnbkb/"><strong>Indy.rs - with Social Distancing</strong></a></li> </ul> </li> </ul> <h3 id="europe"><a class="toclink" href="#europe">Europe</a></h3> <ul> <li>2026-09-10 | Geneva, CH | <a href="https://www.posttenebraslab.ch/wiki/events/monthly_meeting/rust_meetup">Rust Geneva</a><ul> <li><a href="https://www.posttenebraslab.ch/wiki/events/monthly_meeting/rust_meetup"><strong>Rust Meetup Geneva</strong></a></li> </ul> </li> <li>2026-09-14 - 2026-09-16 | Berlin, DE | <a href="https://oxidizeconf.com/">Oxidize 2026</a><ul> <li><a href="https://oxidizeconf.com/"><strong>Oxidize 2026</strong></a></li> </ul> </li> <li>2026-09-15 | Leipzig, DE | <a href="https://www.meetup.com/rust-modern-systems-programming-in-leipzig">Rust - Modern Systems Programming in Leipzig</a><ul> <li><a href="https://www.meetup.com/rust-modern-systems-programming-in-leipzig/events/313816477/"><strong>Reproducing scientific papers - with Rust &amp; "AI"</strong></a></li> </ul> </li> <li>2026-09-15 | Madrid, ES | <a href="https://www.meetup.com/madrust/events/">MadRust</a><ul> <li><a href="https://www.meetup.com/madrust/events/316361267/"><strong>Tras la Máscara de Async Rust</strong></a></li> </ul> </li> <li>2026-09-17 | Dortmund, DE | <a href="https://www.meetup.com/rust-dortmund/events/">Rust Dortmund</a><ul> <li><a href="https://www.meetup.com/rust-dortmund/events/316428507/"><strong>Rust Dortmund Meetup - From Segfault to Safety @DiWoDo</strong></a></li> </ul> </li> <li>2026-09-22 | Prague, CZ | <a href="https://www.meetup.com/rust-prague">Rust Prague</a><ul> <li><a href="https://www.meetup.com/rust-prague/events/316070376/"><strong>Rust Meetup Prague @ Rockwell Automation</strong></a></li> </ul> </li> <li>2026-09-24 | Aarhus, DK | <a href="https://www.meetup.com/rust-aarhus/events/">Rust Aarhus</a><ul> <li><a href="https://www.meetup.com/rust-aarhus/events/316236528/"><strong>Talk Night at SkyTEM</strong></a></li> </ul> </li> <li>2026-09-24 | Amsterdam, NL | <a href="https://www.meetup.com/rust-amsterdam-group/events/">Rust Developers Amsterdam Group</a><ul> <li><a href="https://www.meetup.com/rust-amsterdam-group/events/316162802/"><strong>Rust Meetup @ BlockTech</strong></a></li> </ul> </li> <li>2026-09-24 | Frankfurt, DE | <a href="https://www.meetup.com/rust-rhein-main/events/">Rust Rhein-Main</a><ul> <li><a href="https://www.meetup.com/rust-rhein-main/events/316328297/"><strong>AI Agentic Coding</strong></a></li> </ul> </li> <li>2026-09-28 | Augsburg, DE | <a href="https://rust-augsburg.github.io/meetup">Rust Meetup Augsburg</a><ul> <li><a href="https://rust-augsburg.github.io/meetup/Meetup_21.html"><strong>Rust Meetup #21: Maximilian Grauvogl &amp; Marcel Fink - From Bits to Bugs: A Rust generator for SUIT Manifests and Structure-Aware Parser Fuzzing</strong></a></li> </ul> </li> <li>2026-09-29 | Manchester, UK | <a href="https://www.meetup.com/rust-manchester/events/">Rust Manchester</a><ul> <li><a href="https://www.meetup.com/rust-manchester/events/316200964/"><strong>Rust Manchester September Code Night</strong></a></li> </ul> </li> <li>2026-09-30 | Basel, CH | <a href="https://www.meetup.com/rust-basel/events/">Rust Basel</a><ul> <li><a href="https://www.meetup.com/rust-basel/events/315986893/"><strong>Rust Meetup #16 @ ERNI</strong></a></li> </ul> </li> <li>2026-10-05 | München, DE | <a href="https://www.meetup.com/rust-munich/events/">Rust Munich</a><ul> <li><a href="https://www.meetup.com/rust-munich/events/316244709/"><strong>Rust Munich 2026 / 3</strong></a></li> </ul> </li> </ul> <h3 id="north-america"><a class="toclink" href="#north-america">North America</a></h3> <ul> <li>2026-09-08 - 2026-09-11 | Hybrid (Montreal, CA) | <a href="https://rustconf.com/">RustConf 2026</a><ul> <li><a href="https://rustconf.com/"><strong>RustConf 2026</strong></a></li> </ul> </li> <li>2026-09-09 | Montreal, CA | <a href="https://www.meetup.com/women-in-rust">Women in Rust</a><ul> <li><a href="https://www.meetup.com/women-in-rust/events/315773005/"><strong>RustConf Coffee Break Meetup</strong></a></li> </ul> </li> <li>2026-09-10 | Lehi, UT, US | <a href="https://www.meetup.com/utah-rust">Utah Rust</a><ul> <li><a href="https://www.meetup.com/utah-rust/events/316198046/"><strong>Hands-on Embedded Rust</strong></a></li> </ul> </li> <li>2026-09-10 | San Diego, CA, US | <a href="https://www.meetup.com/san-diego-rust">San Diego Rust</a><ul> <li><a href="https://www.meetup.com/san-diego-rust/events/315601104/"><strong>San Diego Rust September Meetup - Back in person!</strong></a></li> </ul> </li> <li>2026-09-12 | Boston, MA, US | <a href="https://www.meetup.com/bostonrust/events/">Boston Rust Meetup</a><ul> <li><a href="https://www.meetup.com/bostonrust/events/310983699/"><strong>Somerville Union Square Rust Lunch, Sep 12</strong></a></li> </ul> </li> <li>2026-09-15 | San Francisco, CA, US | <a href="https://www.meetup.com/san-francisco-rust-study-group">San Francisco Rust Study Group</a><ul> <li><a href="https://www.meetup.com/san-francisco-rust-study-group/events/314997217/"><strong>Rust Hacking in Person</strong></a></li> </ul> </li> <li>2026-09-16 | San Francisco, CA, US | <a href="https://luma.com/bayarearust">Bay Area Rust</a><ul> <li><a href="https://luma.com/9oiujuyw"><strong>Bay Area Rust - Graphics Meetup</strong></a></li> </ul> </li> <li>2026-09-16 | Hybrid (Vancouver, CA) | <a href="https://www.meetup.com/vancouver-rust">Vancouver Rust</a><ul> <li><a href="https://www.meetup.com/vancouver-rust/events/314233757/"><strong>Building a Rust GPU driver in the Linux kernel</strong></a></li> </ul> </li> <li>2026-09-17 | Hybrid (Seattle, WA, US) | <a href="https://www.meetup.com/join-srug">Seattle Rust User Group</a><ul> <li><a href="https://www.meetup.com/seattle-rust-user-group/events/315635881/"><strong>September, 2026 SRUG (Seattle Rust User Group) Meetup</strong></a></li> </ul> </li> <li>2026-09-17 | Mountain View, CA, US | <a href="https://www.meetup.com/hackerdojo">Hacker Dojo</a><ul> <li><a href="https://www.meetup.com/hackerdojo/events/316176445/"><strong>RUST MEETUP at HACKER DOJO</strong></a></li> </ul> </li> <li>2026-09-19 | Boston, MA, US | <a href="https://www.meetup.com/bostonrust/events/">Boston Rust Meetup</a><ul> <li><a href="https://www.meetup.com/bostonrust/events/316378813/"><strong>Boston Common Rust Lunch, Sep 19</strong></a></li> </ul> </li> <li>2026-09-23 | Austin, TX, US | <a href="https://www.meetup.com/rust-atx">Rust ATX</a><ul> <li><a href="https://www.meetup.com/rust-atx/events/xvkdgtyjcmbfc/"><strong>Rust Lunch - Fareground</strong></a></li> </ul> </li> <li>2026-09-24 | Atlanta, GA, US | <a href="https://www.meetup.com/rust-atl/events/">Rust Atlanta</a><ul> <li><a href="https://www.meetup.com/rust-atl/events/313539333/"><strong>Rust-Atl</strong></a></li> </ul> </li> <li>2026-09-26 | Boston, MA, US | <a href="https://www.meetup.com/bostonrust/events/">Boston Rust Meetup</a><ul> <li><a href="https://www.meetup.com/bostonrust/events/316378817/"><strong>Harvard Rust Lunch, Sep 26</strong></a></li> </ul> </li> <li>2026-10-01 | Saint Louis, MO, US | <a href="https://www.meetup.com/stl-rust/events/">STL Rust</a><ul> <li><a href="https://www.meetup.com/stl-rust/events/316410027/"><strong>Building a Minimal, Rootless Container in Rust</strong></a></li> </ul> </li> <li>2026-10-03 | Boston, MA, US | <a href="https://www.meetup.com/bostonrust/events/">Boston Rust Meetup</a><ul> <li><a href="https://www.meetup.com/bostonrust/events/316378820/"><strong>Alewife Rust Lunch, Oct 3</strong></a></li> </ul> </li> </ul> <h3 id="oceania"><a class="toclink" href="#oceania">Oceania</a></h3> <ul> <li>2026-09-29 | Barton, AU | <a href="https://www.meetup.com/rust-canberra/events/">Canberra Rust User Group</a><ul> <li><a href="https://www.meetup.com/rust-canberra/events/316398052/"><strong>September Meetup</strong></a></li> </ul> </li> </ul> <p>If you are running a Rust event please add it to the <a href="https://www.google.com/calendar/embed?src=apd9vmbc22egenmtu5l6c5jbfc%40group.calendar.google.com">calendar</a> to get it mentioned here. Please remember to add a link to the event too. Email the <a href="mailto:community-team@rust-lang.org">Rust Community Team</a> for access.</p> <h2 id="jobs"><a class="toclink" href="#jobs">Jobs</a></h2> <p>Please see the latest <a href="https://www.reddit.com/r/rust/comments/1vtuq1b/official_rrust_whos_hiring_thread_for_jobseekers/">Who's Hiring thread on r/rust</a></p> <h1 id="quote-of-the-week"><a class="toclink" href="#quote-of-the-week">Quote of the Week</a></h1> <blockquote> <p>The Demon has access to a Super Turing Machine.</p> </blockquote> <p>– <a href="https://rust-lang.zulipchat.com/#narrow/channel/136281-t-opsem/topic/.E2.9C.94.20Can.20IO.20provide.20angelic.20choice/near/621828055">Connor Horman on rust zulip</a></p> <p>Thanks to <a href="https://users.rust-lang.org/t/twir-quote-of-the-week/328/1798">Theemathas</a> for the suggestion!</p> <p><a href="https://users.rust-lang.org/t/twir-quote-of-the-week/328">Please submit quotes and vote for next week!</a></p> <p>This Week in Rust is edited by:</p> <ul> <li><a href="https://github.com/nellshamrell">nellshamrell</a></li> <li><a href="https://github.com/llogiq">llogiq</a></li> <li><a href="https://github.com/ericseppanen">ericseppanen</a></li> <li><a href="https://github.com/extrawurst">extrawurst</a></li> <li><a href="https://github.com/U007D">U007D</a></li> <li><a href="https://github.com/mariannegoldin">mariannegoldin</a></li> <li><a href="https://github.com/bdillo">bdillo</a></li> <li><a href="https://github.com/opeolluwa">opeolluwa</a></li> <li><a href="https://github.com/bnchi">bnchi</a></li> <li><a href="https://github.com/KannanPalani57">KannanPalani57</a></li> <li><a href="https://github.com/tzilist">tzilist</a></li> </ul> <p><em>Email list hosting is sponsored by <a href="https://foundation.rust-lang.org/">The Rust Foundation</a></em></p> <p><small><a href="https://www.reddit.com/r/rust/comments/1wc8sbm/this_week_in_rust_668/">Discuss on r/rust</a></small></p>2026-09-02T00:00:00-04:002026-09-02T00:00:00-04:00TWiR Contributorstag:this-week-in-rust.org,2026-09-02:/blog/2026/09/02/this-week-in-rust-667/

<p>Hello and welcome to another issue of <em>This Week in Rust</em>! <a href="https://www.rust-lang.org/">Rust</a> is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at <a href="https://bsky.app/profile/thisweekinrust.bsky.social">@thisweekinrust.bsky.social</a> on Bluesky or <a href="https://mastodon.social/@thisweekinrust">@ThisWeekinRust</a> on mastodon.social …</p>

<p>Hello and welcome to another issue of <em>This Week in Rust</em>! <a href="https://www.rust-lang.org/">Rust</a> is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at <a href="https://bsky.app/profile/thisweekinrust.bsky.social">@thisweekinrust.bsky.social</a> on Bluesky or <a href="https://mastodon.social/@thisweekinrust">@ThisWeekinRust</a> on mastodon.social, or <a href="https://github.com/rust-lang/this-week-in-rust">send us a pull request</a>. Want to get involved? <a href="https://github.com/rust-lang/rust/blob/main/CONTRIBUTING.md">We love contributions</a>.</p> <p><em>This Week in Rust</em> is openly developed <a href="https://github.com/rust-lang/this-week-in-rust">on GitHub</a> and archives can be viewed at <a href="https://this-week-in-rust.org/">this-week-in-rust.org</a>. If you find any errors in this week's issue, <a href="https://github.com/rust-lang/this-week-in-rust/pulls">please submit a PR</a>.</p> <p>Want TWIR in your inbox? <a href="https://this-week-in-rust.us11.list-manage.com/subscribe?u=fd84c1c757e02889a9b08d289&amp;id=0ed8b72485">Subscribe here</a>.</p> <h2 id="updates-from-rust-community"><a class="toclink" href="#updates-from-rust-community">Updates from Rust Community</a></h2> <h3 id="official"><a class="toclink" href="#official">Official</a></h3> <ul> <li><a href="https://blog.rust-lang.org/2026/09/01/Rustup-1.29.1/">Announcing rustup 1.29.1</a></li> <li><a href="https://blog.rust-lang.org/inside-rust/2026/08/28/electing-new-project-directors-2026/">Electing new Project Directors 2026</a></li> <li><a href="https://blog.rust-lang.org/inside-rust/2026/08/31/program-management-2026-jul-aug/">Program management in July–August 2026</a></li> </ul> <h3 id="foundation"><a class="toclink" href="#foundation">Foundation</a></h3> <ul> <li><a href="https://rustfoundation.org/media/how-the-rust-standard-library-verification-contest-scaled-past-manual-proof-engineering/">How the Rust Standard Library Verification Contest Scaled Past Manual Proof Engineering</a></li> <li><a href="https://rustfoundation.org/media/welcoming-rust-program-manager-tomas-sedovic-to-the-rust-foundation-team/">Welcoming Rust Program Manager, Tomáš Šedovič, to the Rust Foundation Team!</a></li> <li><a href="https://rustfoundation.org/media/welcoming-jess-izen-as-engineer-in-residence-at-the-rust-foundation/">Welcoming Jess Izen as Engineer in Residence at the Rust Foundation</a></li> </ul> <h3 id="newsletters"><a class="toclink" href="#newsletters">Newsletters</a></h3> <ul> <li><a href="https://www.theembeddedrustacean.com/p/the-embedded-rustacean-issue-79">The Embedded Rustacean Issue #79</a></li> </ul> <h3 id="projecttooling-updates"><a class="toclink" href="#projecttooling-updates">Project/Tooling Updates</a></h3> <ul> <li><a href="https://wasmi-labs.github.io/blog/posts/wasmi-v2.0/">Wasmi 2.0 - Engineering of the Fastest Wasm Interpreters</a></li> <li><a href="https://noahlev.org/blog/2026/08/27/making-rustdoc-faster/">How I made Rustdoc 33% faster in one week</a></li> <li><a href="https://www.scylladb.com/2026/08/31/async-ffi-framework-for-rust-c-interop/">A Self-Baked Async FFI Framework for Rust C# Interop</a></li> </ul> <h3 id="observationsthoughts"><a class="toclink" href="#observationsthoughts">Observations/Thoughts</a></h3> <ul> <li><a href="https://spirali.github.io/blog/cargo-scheduler/">Could Cargo's scheduler be better?</a></li> <li><a href="https://www.sonair.com/journal/how-we-safety-certified-the-worlds-first-rust-implementation">How we developed the world's first safety-certified product written in Rust – and why we went bare metal</a></li> <li><a href="https://blog.cloudflare.com/dns-cache-memory-optimization-1111/">How we saved 100 terabytes of memory by optimizing 1.1.1.1’s DNS cache</a></li> <li><a href="https://kerkour.com/rust-vs-go-concurrency">Rust concurrency vs Go concurrency: stackless vs stackfull coroutines</a></li> <li><a href="https://medium.com/@carlmkadie/nine-rules-for-compile-time-work-with-rust-const-fn-part-1-a29f7dd62b2f">Nine Rules for Compile-Time Work with Rust const fn: Parse files, build tables, and catch mistakes … without a build script (Part 1)</a></li> <li>[video] <a href="https://www.youtube.com/watch?v=d7jQXm1KcOA">An Agentic VM in Rust — by Cristian Sánchez</a></li> <li>[video] <a href="https://www.youtube.com/watch?v=zQAia_u8WPM">Making Progress on AsyncIterator — by Jack O'Connor</a></li> </ul> <h3 id="rust-walkthroughs"><a class="toclink" href="#rust-walkthroughs">Rust Walkthroughs</a></h3> <ul> <li><a href="https://lwn.net/SubscriberLink/1090378/b33a6fe3f4033507/">The 'rnull' Rust block driver</a></li> <li><a href="https://blog.sheerluck.dev/posts/your-first-gpui-app-building-a-desktop-ui-in-rust/">Your First GPUI App - Building a Desktop UI in Rust</a></li> <li><a href="https://bitfieldconsulting.com/posts/welcome-to-machine">Welcome to the machine: emulating a CPU</a></li> <li><a href="https://murlet.com/blog/hunting-rust-memory-leaks/">Proving my Rust NVR doesn't leak memory (it did)</a></li> <li><a href="https://rust-blog.github.io/post/favi-child-property-tests">Software That Must Not Be Wrong: Property Tests for a Pediatric Dosing Calculator</a></li> <li><a href="https://hlcfan.github.io/gpui-canvas-shapes.html">Drawing Shapes with GPUI's Canvas</a></li> <li><a href="https://gmcgoldr.github.io/2026/08/27/pin-in-rust.html">Pinning Down Rust’s Pin</a></li> </ul> <h3 id="research"><a class="toclink" href="#research">Research</a></h3> <ul> <li><a href="https://dl.acm.org/doi/10.1145/3830438.3830958">Functional State Machines in Rust: Typestate and Newtype Patterns</a></li> </ul> <h3 id="miscellaneous"><a class="toclink" href="#miscellaneous">Miscellaneous</a></h3> <ul> <li><a href="https://blog.jetbrains.com/rust/2026/08/26/ubuntu-rust/">Ubuntu Rust: How Canonical Is Modernizing Core System Tools</a></li> </ul> <h2 id="crate-of-the-week"><a class="toclink" href="#crate-of-the-week">Crate of the Week</a></h2> <p>This week's crate is <a href="https://crates.io/crates/buf_read_splitter">buf_read_splitter</a>, a crate to split (separate) a stream into sub-subtreams.</p> <p>Thanks to <a href="https://users.rust-lang.org/t/crate-of-the-week/2704/1659">flo</a> for the self-suggestion!</p> <p><a href="https://users.rust-lang.org/t/crate-of-the-week/2704">Please submit your suggestions and votes for next week</a>!</p> <h2 id="calls-for-testing"><a class="toclink" href="#calls-for-testing">Calls for Testing</a></h2> <p>An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.</p> <p>If you are a feature implementer and would like your RFC to appear in this list, add a <code>call-for-testing</code> label to your RFC along with a comment providing testing instructions and/or guidance on which aspect(s) of the feature need testing.</p> <p><em>No calls for testing were issued this week by <a href="https://github.com/rust-lang/rust/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Rust</a>, <a href="https://github.com/rust-lang/cargo/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Cargo</a>, <a href="https://github.com/rust-lang/rustup/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Rustup</a> or <a href="https://github.com/rust-lang/rfcs/issues?q=label%3Acall-for-testing%20state%3Aopen">Rust language RFCs</a>.</em></p> <p><a href="https://github.com/rust-lang/this-week-in-rust/issues">Let us know</a> if you would like your feature to be tracked as a part of this list.</p> <h2 id="call-for-participation-projects-and-speakers"><a class="toclink" href="#call-for-participation-projects-and-speakers">Call for Participation; projects and speakers</a></h2> <h3 id="cfp-projects"><a class="toclink" href="#cfp-projects">CFP - Projects</a></h3> <p>Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!</p> <p>Some of these tasks may also have mentors available, visit the task page for more information.</p> <ul> <li><a href="https://github.com/webtools-dotcom/Zynlex/issues/13">Zynlex - Add case-sensitive and whole-word toggles to find-in-page</a></li> <li><a href="https://github.com/d4vid87/hookecho/issues/12">HookEcho - High-contrast theme: colormaps and stroke widths do not respond to it</a></li> <li><a href="https://github.com/lacs-project/sysknife/issues/234">sysknife - UfwDeleteRule needs a rule number that no action in the catalogue can produce</a></li> <li><a href="https://github.com/lacs-project/sysknife/issues/250">sysknife - peer_pidfd cannot tell a pre-6.5 kernel from a peer that already exited, so the PID-reuse check is off in the reuse case</a></li> <li><a href="https://github.com/lacs-project/sysknife/issues/249">sysknife - The signed trail names which account asked for a change, never which one approved it</a></li> </ul> <p>If you are a Rust project owner and are looking for contributors, please submit tasks <a href="https://github.com/rust-lang/this-week-in-rust?tab=readme-ov-file#call-for-participation-guidelines">here</a> or through a <a href="https://github.com/rust-lang/this-week-in-rust">PR to TWiR</a> or by reaching out on <a href="https://bsky.app/profile/thisweekinrust.bsky.social">Bluesky</a> or <a href="https://mastodon.social/@thisweekinrust">Mastodon</a>!</p> <h3 id="cfp-events"><a class="toclink" href="#cfp-events">CFP - Events</a></h3> <p>Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.</p> <p>If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a <a href="https://github.com/rust-lang/this-week-in-rust">PR to TWiR</a> or by reaching out on <a href="https://bsky.app/profile/thisweekinrust.bsky.social">Bluesky</a> or <a href="https://mastodon.social/@thisweekinrust">Mastodon</a>!</p> <h2 id="updates-from-the-rust-project"><a class="toclink" href="#updates-from-the-rust-project">Updates from the Rust Project</a></h2> <p>522 pull requests were <a href="https://github.com/search?q=is%3Apr+org%3Arust-lang+is%3Amerged+merged%3A2026-08-25..2026-09-01">merged in the last week</a></p> <h4 id="compiler"><a class="toclink" href="#compiler">Compiler</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust/pull/161888">compiler: allow safestack to be togglable via <code>#[sanitize(safestack = "...")]</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/160473">perf: push nominal obligations instead of returning them</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161456">reduce perf impact of scalar size checks</a></li> <li><a href="https://github.com/rust-lang/rust/pull/162004">remove unneeded clone in macro deriving</a></li> </ul> <h4 id="library"><a class="toclink" href="#library">Library</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust/pull/161617">add custom allocators to <code>(try_)map</code> on <code>Box</code>, Rc<code>, Arc</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/161081">add intrinsics for integer minimum and maximum</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161034">add SVE-accelerated <code>Vec::retain_mut</code> for aarch64</a></li> <li><a href="https://github.com/rust-lang/rust/pull/150067">alloc <code>String::retain</code> optimization</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161301">core: expose volatile atomic operations</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161577">implement <code>[u8]::split_ascii_whitespace</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/150075">implement <code>clamp_to</code></a></li> </ul> <h4 id="cargo"><a class="toclink" href="#cargo">Cargo</a></h4> <ul> <li><a href="https://github.com/rust-lang/cargo/pull/17298">diag: Stabilize cargo-lints</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17335">resolver: Stabilize min-publish-age</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17373">run: Printing a new line to avoid overwriting error code after \r</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17366">trim-paths: custom workspace-relative member paths remap</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17406"><code>perf(git)</code>: Reduce extra work when using git-cli</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17411">cargo profiling improvements</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/15056">manifest!: implement feature-metadata RFC3416</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17412">perf: do not build SBOM if user has not set build.sbom</a></li> </ul> <h4 id="rustdoc"><a class="toclink" href="#rustdoc">Rustdoc</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust/pull/161876">correctly handle when a macro generates multiple items in <code>--generate-macro-expansion</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/161843">fix lint <code>cargo::non_kebab_case_bins</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/161944">take into account edition information for keyword highlighting</a></li> </ul> <h4 id="rustfmt"><a class="toclink" href="#rustfmt">Rustfmt</a></h4> <ul> <li><a href="https://github.com/rust-lang/rustfmt/pull/7080">allow users to set the release channel when running the diff check</a></li> </ul> <h4 id="clippy"><a class="toclink" href="#clippy">Clippy</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17643"><code>fix(cargo_common_metadata)</code>: stop checking <code>package.readme</code></a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17495"><code>fix(redundant_clone)</code>: Make <code>visit_local_usage</code> analyse loop bodies instead of giving up on them</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17663">add comma to <code>lint_groups_priority</code> error message</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17632">fix <code>--explain</code> lint lookup being case-mismatched</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17163">fix false positive for never type impls</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17611"><code>missing_transmute_annotations</code> should not contain fn name in suggestion</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17605">perf: bail early in <code>too_many_lines</code> lint if rule is not enabled</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17486">perf: skip redundant clone analysis for clone-free functions</a></li> </ul> <h4 id="rust-analyzer"><a class="toclink" href="#rust-analyzer">Rust-Analyzer</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23213">allow “Extract variable” to be invoked on field names in record expressions</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23162">fix HIR lowering of params of trait assoc fns</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23256">fix incorrect generic shown on hover</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23257">fix <code>NamedTempFile</code></a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23235">fix some subtle bugs in docs rendering</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23184">fix unsafeck of <code>&amp;raw *</code></a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23229">fix panic on accessing numeric fields in unions</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23212">fix panic on deref of unresolved aliases</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23238">fix panic when computing <code>extract_variable</code> with macros</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23250">fix panic when hovering a dyn trait with a binder</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23245">print the ABI for fn pointers (if not the default)</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23176">push a generic params scope for consts</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23242">range pattern inside a parenthesis parsed as tuple pattern</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23232">reinfer never type in array repeat expressions</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/22901">strip leading asterisk decoration from block doc comments</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23206">switch from <code>temp-dir</code> to a homemade <code>NamedTempFile</code> implementation</a></li> </ul> <h3 id="rust-compiler-performance-triage"><a class="toclink" href="#rust-compiler-performance-triage">Rust Compiler Performance Triage</a></h3> <p>This week continues a steady stream of compile time improvements. Most of the impact this week comes from type system micro-optimization in <a href="https://github.com/rust-lang/rust/pull/160473">#160473</a> and <code>dead_code</code> lint propagation fix in <a href="https://github.com/rust-lang/rust/pull/161571">#161571</a>. We've also hit unexpected regression in a standard library refactor, but we expect that to be addressed soon.</p> <p>Triage done by <strong>@panstromek</strong>. Revision range: <a href="https://perf.rust-lang.org/?start=9a4ad59ae3073b013cd62f53f8349ddc61a012e8&amp;end=5321a4f40c957cf3587c055e77461febc2ebc865&amp;absolute=false&amp;stat=instructions%3Au">9a4ad59a..5321a4f4</a></p> <p><strong>Summary</strong>:</p> <table> <thead> <tr> <th style="text-align: center;">(instructions:u)</th> <th style="text-align: center;">mean</th> <th style="text-align: center;">range</th> <th style="text-align: center;">count</th> </tr> </thead> <tbody> <tr> <td style="text-align: center;">Regressions ❌ <br /> (primary)</td> <td style="text-align: center;">0.6%</td> <td style="text-align: center;">[0.2%, 1.8%]</td> <td style="text-align: center;">27</td> </tr> <tr> <td style="text-align: center;">Regressions ❌ <br /> (secondary)</td> <td style="text-align: center;">0.6%</td> <td style="text-align: center;">[0.2%, 1.8%]</td> <td style="text-align: center;">27</td> </tr> <tr> <td style="text-align: center;">Improvements ✅ <br /> (primary)</td> <td style="text-align: center;">-0.7%</td> <td style="text-align: center;">[-2.4%, -0.1%]</td> <td style="text-align: center;">135</td> </tr> <tr> <td style="text-align: center;">Improvements ✅ <br /> (secondary)</td> <td style="text-align: center;">-0.7%</td> <td style="text-align: center;">[-2.2%, -0.1%]</td> <td style="text-align: center;">120</td> </tr> <tr> <td style="text-align: center;">All ❌✅ (primary)</td> <td style="text-align: center;">-0.5%</td> <td style="text-align: center;">[-2.4%, 1.8%]</td> <td style="text-align: center;">162</td> </tr> </tbody> </table> <p>5 Regressions, 4 Improvements, 4 Mixed; 9 of them in rollups 39 artifact comparisons made in total</p> <p><a href="https://github.com/rust-lang/rustc-perf/blob/e1439e38ea41334d013d9566c2d20a914e3378c7/triage/2026/2026-08-31.md">Full report here</a></p> <h3 id="approved-rfcs"><a class="toclink" href="#approved-rfcs"><a href="https://github.com/rust-lang/rfcs/commits/master">Approved RFCs</a></a></h3> <p>Changes to Rust follow the Rust <a href="https://github.com/rust-lang/rfcs#rust-rfcs">RFC (request for comments) process</a>. These are the RFCs that were approved for implementation this week:</p> <ul> <li><a href="https://github.com/rust-lang/rfcs/pull/3999">Change <code>i686-pc-windows-msvc</code> from Tier 1 with host tools =&gt; Tier 1 without host tools</a></li> </ul> <h3 id="final-comment-period"><a class="toclink" href="#final-comment-period">Final Comment Period</a></h3> <p>Every week, <a href="https://www.rust-lang.org/team.html">the team</a> announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.</p> <h4 id="tracking-issues-prs"><a class="toclink" href="#tracking-issues-prs">Tracking Issues &amp; PRs</a></h4> <h5 id="rust"><a class="toclink" href="#rust"><a href="https://github.com/rust-lang/rust/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Rust</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/rust/pull/161430">Re-export <code>core::fmt::NumBuffer</code> in <code>alloc</code> (and <code>std</code>)</a></li> <li><a href="https://github.com/rust-lang/rust/pull/158186">Guarantee 8 bytes of alignment of RawWakerVTable</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161520">Stabilize <code>core::mem::DropGuard</code></a></li> <li><a href="https://github.com/rust-lang/rust/issues/161925">"stabilize never type" T-types FCP</a></li> </ul> <h5 id="rust-rfcs"><a class="toclink" href="#rust-rfcs"><a href="https://github.com/rust-lang/rfcs/issues?q=state%3Aopen%20label%3Afinal-comment-period%20state%3Aopen">Rust RFCs</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/rfcs/pull/3958">Rustdoc LaTeX math</a></li> <li><a href="https://github.com/rust-lang/rfcs/pull/3485">RFC: Cargo feature descriptions</a></li> </ul> <h5 id="leadership-council"><a class="toclink" href="#leadership-council"><a href="https://github.com/rust-lang/leadership-council/issues?q=state%3Aopen%20label%3Afinal-comment-period%20state%3Aopen">Leadership Council</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/leadership-council/issues/329">Extend temporary funding team charter 2026-09</a></li> <li><a href="https://github.com/rust-lang/leadership-council/pull/286">Update PD election process based on 2025 feedback</a></li> </ul> <p><em>No Items entered Final Comment Period this week for <a href="https://github.com/rust-lang/cargo/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Cargo</a>, <a href="https://github.com/rust-lang/compiler-team/issues?q=label%3Amajor-change%20label%3Afinal-comment-period%20state%3Aopen">Compiler Team</a>, <a href="https://github.com/rust-lang/lang-team/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Language Team</a>, <a href="https://github.com/rust-lang/reference/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Language Reference</a> or <a href="https://github.com/rust-lang/unsafe-code-guidelines/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Unsafe Code Guidelines</a>.</em> Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.</p> <h3 id="new-and-updated-rfcs"><a class="toclink" href="#new-and-updated-rfcs"><a href="https://github.com/rust-lang/rfcs/pulls">New and Updated RFCs</a></a></h3> <ul> <li><a href="https://github.com/rust-lang/rfcs/pull/4004">Errata RFC 4004: Discourage locally recursive <code>accessible(..)</code></a></li> </ul> <h2 id="upcoming-events"><a class="toclink" href="#upcoming-events">Upcoming Events</a></h2> <p>Rusty Events between 2026-09-02 - 2026-09-30 🦀</p> <h3 id="virtual"><a class="toclink" href="#virtual">Virtual</a></h3> <ul> <li>2026-09-02 | Virtual (Indianapolis, IN, US) | <a href="https://www.meetup.com/indyrs/events/">Indy Rust</a><ul> <li><a href="https://www.meetup.com/indyrs/events/wqzhftyjcmbdb/"><strong>Indy.rs - with Social Distancing</strong></a></li> </ul> </li> <li>2026-09-02 | Virtual (Indianapolis, IN, US) | <a href="https://www.meetup.com/indyrs">Indy Rust</a><ul> <li><a href="https://www.meetup.com/indyrs/events/316107210/"><strong>Indy.rs - with Social Distancing</strong></a></li> </ul> </li> <li>2026-09-04 | Virtual | <a href="https://luma.com/rust-girona">Rust Girona</a><ul> <li><a href="https://luma.com/sqf4ux01"><strong>Sessió setmanal de codificació / Weekly coding session</strong></a></li> </ul> </li> <li>2026-09-06 | Virtual | <a href="https://luma.com/rust-maven">Rust 🦀 Maven</a><ul> <li><a href="https://luma.com/9lte7a58"><strong>Facts: Curated Knowledge for Humans and Agents</strong></a></li> </ul> </li> <li>2026-09-06 | Virtual (Dallas, TX, US) | <a href="https://www.meetup.com/dallasrust">Dallas Rust User Meetup</a><ul> <li><a href="https://www.meetup.com/dallasrust/events/316133872/"><strong>Rust Deep Learning: First Sunday</strong></a></li> </ul> </li> <li>2026-09-08 - 2026-09-11 | Hybrid (Montreal, CA) | <a href="https://rustconf.com/">RustConf 2026</a><ul> <li><a href="https://rustconf.com/"><strong>RustConf 2026</strong></a></li> </ul> </li> <li>2026-09-08 | Virtual (Dallas, TX, US) | <a href="https://www.meetup.com/dallasrust">Dallas Rust User Meetup</a><ul> <li><a href="https://www.meetup.com/dallasrust/events/310254774/"><strong>Second Tuesday</strong></a></li> </ul> </li> <li>2026-09-08 | Virtual (London, UK) | <a href="https://www.meetup.com/women-in-rust">Women in Rust</a><ul> <li><a href="https://www.meetup.com/women-in-rust/events/315859305/"><strong>👋 Community Catch Up</strong></a></li> </ul> </li> <li>2026-09-09 | Virtual (Cardiff, GB) | <a href="https://www.meetup.com/rust-and-c-plus-plus-in-cardiff/events/">Rust and C++ Cardiff</a><ul> <li><a href="https://www.meetup.com/rust-and-c-plus-plus-in-cardiff/events/316283651/"><strong>Operating Systems Book Club: Address spaces and Memory API</strong></a></li> </ul> </li> <li>2026-09-10 | Virtual | <a href="https://luma.com/rust-maven">Rust 🦀 Maven</a><ul> <li><a href="https://luma.com/rfbzk3ae"><strong>Solving Real-World Planning Problems in Rust with SolverForge</strong></a></li> </ul> </li> <li>2026-09-10 | Virtual (Berlin, DE) | <a href="https://www.meetup.com/rust-berlin">Rust Berlin</a><ul> <li><a href="https://www.meetup.com/rust-berlin/events/315691423/"><strong>Rust Hack and Learn</strong></a></li> </ul> </li> <li>2026-09-10 | Virtual (Nürnberg, DE) | <a href="https://www.meetup.com/rust-noris">Rust Nuremberg</a><ul> <li><a href="https://www.meetup.com/rust-noris/events/315619611/"><strong>Rust Nürnberg online</strong></a></li> </ul> </li> <li>2026-09-15 | Virtual (Washington, DC, US) | <a href="https://www.meetup.com/rustdc">Rust DC</a><ul> <li><a href="https://www.meetup.com/rustdc/events/fhvsztyjcmbtb/"><strong>Mid-month Rustful</strong></a></li> </ul> </li> <li>2026-09-16 | Hybrid (Vancouver, CA) | <a href="https://www.meetup.com/vancouver-rust">Vancouver Rust</a><ul> <li><a href="https://www.meetup.com/vancouver-rust/events/314233757/"><strong>Building a Rust GPU driver in the Linux kernel</strong></a></li> </ul> </li> <li>2026-09-17 | Hybrid (Seattle, WA, US) | <a href="https://www.meetup.com/join-srug">Seattle Rust User Group</a><ul> <li><a href="https://www.meetup.com/seattle-rust-user-group/events/315635881/"><strong>September, 2026 SRUG (Seattle Rust User Group) Meetup</strong></a></li> </ul> </li> <li>2026-09-18 | Virtual | <a href="https://luma.com/rust-girona">Rust Girona</a><ul> <li><a href="https://luma.com/ibaxicxv"><strong>Sessió setmanal de codificació / Weekly coding session</strong></a></li> </ul> </li> <li>2026-09-20 | Virtual (Dallas, TX, US) | <a href="https://www.meetup.com/dallasrust">Dallas Rust User Meetup</a><ul> <li><a href="https://www.meetup.com/dallasrust/events/316133974/"><strong>Rust Deep Learning: Third Sunday</strong></a></li> </ul> </li> <li>2026-09-22 | Virtual (Dallas, TX, US) | <a href="https://www.meetup.com/dallasrust">Dallas Rust User Meetup</a><ul> <li><a href="https://www.meetup.com/dallasrust/events/310254773/"><strong>Fourth Tuesday Rust Bookclub</strong></a></li> </ul> </li> <li>2026-09-24 | Virtual (Berlin, DE) | <a href="https://www.meetup.com/rust-berlin/events/">Rust Berlin</a><ul> <li><a href="https://www.meetup.com/rust-berlin/events/315907979/"><strong>Rust Hack and Learn</strong></a></li> </ul> </li> <li>2026-09-29 | Virtual (London, UK) | <a href="https://www.meetup.com/women-in-rust/events/">Women in Rust</a><ul> <li><a href="https://www.meetup.com/women-in-rust/events/315691730/"><strong>Lunch &amp; Learn: Crates, Tips &amp; Tricks Lightning Talks - Bring your ideas!</strong></a></li> </ul> </li> </ul> <h3 id="africa"><a class="toclink" href="#africa">Africa</a></h3> <ul> <li>2026-09-08 | Johannesburg, ZA | <a href="https://www.meetup.com/johannesburg-rust-meetup">Johannesburg Rust Meetup</a><ul> <li><a href="https://www.meetup.com/johannesburg-rust-meetup/events/315750593/"><strong>Rust's extended standard library</strong></a></li> </ul> </li> </ul> <h3 id="europe"><a class="toclink" href="#europe">Europe</a></h3> <ul> <li>2026-09-03 | Berlin, DE | <a href="https://www.meetup.com/rust-berlin/events/">Rust Berlin</a><ul> <li><a href="https://www.meetup.com/rust-berlin/events/316311827/"><strong>Rust Berlin on location 🏳️‍🌈 - Edition 017</strong></a></li> </ul> </li> <li>2026-09-03 | Oxford, GB | <a href="https://www.meetup.com/oxford-rust-meetup-group/events/">Oxford ACCU/Rust Meetup.</a><ul> <li><a href="https://www.meetup.com/oxford-rust-meetup-group/events/316310712/"><strong>Live coding a Sinclair Spectrum from scratch</strong></a></li> </ul> </li> <li>2026-09-08 | Paris, FR | <a href="https://www.meetup.com/rust-paris">Rust Paris</a><ul> <li><a href="https://www.meetup.com/rust-paris/events/316169040/"><strong>Rust meetup #87</strong></a></li> </ul> </li> <li>2026-10-10 | Geneva, CH | <a href="https://www.posttenebraslab.ch/wiki/events/monthly_meeting/rust_meetup">Rust Geneva</a><ul> <li><a href="https://www.posttenebraslab.ch/wiki/events/monthly_meeting/rust_meetup"><strong>Rust Meetup Geneva</strong></a></li> </ul> </li> <li>2026-09-14 - 2026-09-16 | Berlin, DE | <a href="https://oxidizeconf.com/">Oxidize 2026</a><ul> <li><a href="https://oxidizeconf.com/"><strong>Oxidize 2026</strong></a></li> </ul> </li> <li>2026-09-15 | Leipzig, DE | <a href="https://www.meetup.com/rust-modern-systems-programming-in-leipzig">Rust - Modern Systems Programming in Leipzig</a><ul> <li><a href="https://www.meetup.com/rust-modern-systems-programming-in-leipzig/events/313816477/"><strong>Reproducing scientific papers - with Rust &amp; "AI"</strong></a></li> </ul> </li> <li>2026-09-15 | Madrid, ES | <a href="https://www.meetup.com/madrust/events/">MadRust</a><ul> <li><a href="https://www.meetup.com/madrust/events/316361267/"><strong>Tras la Máscara de Async Rust</strong></a></li> </ul> </li> <li>2026-09-22 | Prague, CZ | <a href="https://www.meetup.com/rust-prague">Rust Prague</a><ul> <li><a href="https://www.meetup.com/rust-prague/events/316070376/"><strong>Rust Meetup Prague @ Rockwell Automation</strong></a></li> </ul> </li> <li>2026-09-24 | Aarhus, DK | <a href="https://www.meetup.com/rust-aarhus/events/">Rust Aarhus</a><ul> <li><a href="https://www.meetup.com/rust-aarhus/events/316236528/"><strong>Talk Night at SkyTEM</strong></a></li> </ul> </li> <li>2026-09-24 | Amsterdam, NL | <a href="https://www.meetup.com/rust-amsterdam-group/events/">Rust Developers Amsterdam Group</a><ul> <li><a href="https://www.meetup.com/rust-amsterdam-group/events/316162802/"><strong>Rust Meetup @ BlockTech</strong></a></li> </ul> </li> <li>2026-09-24 | Frankfurt, DE | <a href="https://www.meetup.com/rust-rhein-main/events/">Rust Rhein-Main</a><ul> <li><a href="https://www.meetup.com/rust-rhein-main/events/316328297/"><strong>AI Agentic Coding</strong></a></li> </ul> </li> <li>2026-09-29 | Manchester, GB | <a href="https://www.meetup.com/rust-manchester/events/">Rust Manchester</a><ul> <li><a href="https://www.meetup.com/rust-manchester/events/316200964/"><strong>Rust Manchester September Code Night</strong></a></li> </ul> </li> <li>2026-09-30 | Basel, CH | <a href="https://www.meetup.com/rust-basel/events/">Rust Basel</a><ul> <li><a href="https://www.meetup.com/rust-basel/events/315986893/"><strong>Rust Meetup #16 @ ERNI</strong></a></li> </ul> </li> </ul> <h3 id="north-america"><a class="toclink" href="#north-america">North America</a></h3> <ul> <li>2026-09-03 | Mountain View, CA, US | <a href="https://www.meetup.com/hackerdojo">Hacker Dojo</a><ul> <li><a href="https://www.meetup.com/hackerdojo/events/316124372/"><strong>RUST MEETUP at HACKER DOJO</strong></a></li> </ul> </li> <li>2026-09-03 | Saint Louis, MO, US | <a href="https://www.meetup.com/stl-rust">STL Rust</a><ul> <li><a href="https://www.meetup.com/stl-rust/events/315603673/"><strong>Cryptography + Quantum Computers</strong></a></li> </ul> </li> <li>2026-09-05 | Boston, MA, US | <a href="https://www.meetup.com/bostonrust/events/">Boston Rust Meetup</a><ul> <li><a href="https://www.meetup.com/bostonrust/events/316378793/"><strong>Allston-Brighton Rust Lunch, Sep 5</strong></a></li> </ul> </li> <li>2026-09-08 | Montreal, CA| <a href="https://rustfoundation.org/event/rust-teams-health-summit/">The Rust Foundation</a><ul> <li><a href="https://rustfoundation.org/media/rust-teams-health-summit-september-8-in-montreal/"><strong>Rust Teams Health Summit</strong></a></li> </ul> </li> <li>2026-09-08 - 2026-09-11 | Hybrid (Montreal, CA) | <a href="https://rustconf.com/">RustConf 2026</a><ul> <li><a href="https://rustconf.com/"><strong>RustConf 2026</strong></a></li> </ul> </li> <li>2026-09-09 | Montreal, CA | <a href="https://www.meetup.com/women-in-rust">Women in Rust</a><ul> <li><a href="https://www.meetup.com/women-in-rust/events/315773005/"><strong>RustConf Coffee Break Meetup</strong></a></li> </ul> </li> <li>2026-09-10 | Lehi, UT, US | <a href="https://www.meetup.com/utah-rust">Utah Rust</a><ul> <li><a href="https://www.meetup.com/utah-rust/events/316198046/"><strong>Hands-on Embedded Rust</strong></a></li> </ul> </li> <li>2026-09-10 | San Diego, CA, US | <a href="https://www.meetup.com/san-diego-rust">San Diego Rust</a><ul> <li><a href="https://www.meetup.com/san-diego-rust/events/315601104/"><strong>San Diego Rust September Meetup - Back in person!</strong></a></li> </ul> </li> <li>2026-09-12 | Boston, MA, US | <a href="https://www.meetup.com/bostonrust/events/">Boston Rust Meetup</a><ul> <li><a href="https://www.meetup.com/bostonrust/events/310983699/"><strong>Somerville Union Square Rust Lunch, Sep 12</strong></a></li> </ul> </li> <li>2026-09-15 | San Francisco, CA, US | <a href="https://www.meetup.com/san-francisco-rust-study-group">San Francisco Rust Study Group</a><ul> <li><a href="https://www.meetup.com/san-francisco-rust-study-group/events/314997217/"><strong>Rust Hacking in Person</strong></a></li> </ul> </li> <li>2026-09-16 | San Francisco, CA, US | <a href="https://luma.com/bayarearust">Bay Area Rust</a><ul> <li><a href="https://luma.com/9oiujuyw"><strong>Bay Area Rust - Graphics Meetup</strong></a></li> </ul> </li> <li>2026-09-16 | Hybrid (Vancouver, CA) | <a href="https://www.meetup.com/vancouver-rust">Vancouver Rust</a><ul> <li><a href="https://www.meetup.com/vancouver-rust/events/314233757/"><strong>Building a Rust GPU driver in the Linux kernel</strong></a></li> </ul> </li> <li>2026-09-17 | Hybrid (Seattle, WA, US) | <a href="https://www.meetup.com/join-srug">Seattle Rust User Group</a><ul> <li><a href="https://www.meetup.com/seattle-rust-user-group/events/315635881/"><strong>September, 2026 SRUG (Seattle Rust User Group) Meetup</strong></a></li> </ul> </li> <li>2026-09-17 | Mountain View, CA, US | <a href="https://www.meetup.com/hackerdojo">Hacker Dojo</a><ul> <li><a href="https://www.meetup.com/hackerdojo/events/316176445/"><strong>RUST MEETUP at HACKER DOJO</strong></a></li> </ul> </li> <li>2026-09-23 | Austin, TX, US | <a href="https://www.meetup.com/rust-atx">Rust ATX</a><ul> <li><a href="https://www.meetup.com/rust-atx/events/xvkdgtyjcmbfc/"><strong>Rust Lunch - Fareground</strong></a></li> </ul> </li> <li>2026-09-24 | Atlanta, GA, US | <a href="https://www.meetup.com/rust-atl/events/">Rust Atlanta</a><ul> <li><a href="https://www.meetup.com/rust-atl/events/313539333/"><strong>Rust-Atl</strong></a></li> </ul> </li> <li>2026-09-26 | Boston, MA, US | <a href="https://www.meetup.com/bostonrust/events/">Boston Rust Meetup</a><ul> <li><a href="https://www.meetup.com/bostonrust/events/316378817/"><strong>Harvard Rust Lunch, Sep 26</strong></a></li> </ul> </li> </ul> <p>If you are running a Rust event please add it to the <a href="https://www.google.com/calendar/embed?src=apd9vmbc22egenmtu5l6c5jbfc%40group.calendar.google.com">calendar</a> to get it mentioned here. Please remember to add a link to the event too. Email the <a href="mailto:community-team@rust-lang.org">Rust Community Team</a> for access.</p> <h2 id="jobs"><a class="toclink" href="#jobs">Jobs</a></h2> <p>Please see the latest <a href="https://www.reddit.com/r/rust/comments/1vtuq1b/official_rrust_whos_hiring_thread_for_jobseekers/">Who's Hiring thread on r/rust</a></p> <h1 id="quote-of-the-week"><a class="toclink" href="#quote-of-the-week">Quote of the Week</a></h1> <blockquote> <p>I think you are inventing provenance for integers. Please, let's not.</p> </blockquote> <p>– <a href="https://github.com/rust-lang/rfcs/pull/4001#discussion_r3825423816">Ralf Jung in an RFC discussion</a></p> <p>Thanks to <a href="https://users.rust-lang.org/t/twir-quote-of-the-week/328/1792">kleines Filmröllchen</a> for the suggestion!</p> <p><a href="https://users.rust-lang.org/t/twir-quote-of-the-week/328">Please submit quotes and vote for next week!</a></p> <p>This Week in Rust is edited by:</p> <ul> <li><a href="https://github.com/nellshamrell">nellshamrell</a></li> <li><a href="https://github.com/llogiq">llogiq</a></li> <li><a href="https://github.com/ericseppanen">ericseppanen</a></li> <li><a href="https://github.com/extrawurst">extrawurst</a></li> <li><a href="https://github.com/U007D">U007D</a></li> <li><a href="https://github.com/mariannegoldin">mariannegoldin</a></li> <li><a href="https://github.com/bdillo">bdillo</a></li> <li><a href="https://github.com/opeolluwa">opeolluwa</a></li> <li><a href="https://github.com/bnchi">bnchi</a></li> <li><a href="https://github.com/KannanPalani57">KannanPalani57</a></li> <li><a href="https://github.com/tzilist">tzilist</a></li> </ul> <p><em>Email list hosting is sponsored by <a href="https://foundation.rust-lang.org/">The Rust Foundation</a></em></p> <p><small><a href="https://www.reddit.com/r/rust/comments/1w5wisv/this_week_in_rust_667/">Discuss on r/rust</a></small></p>2026-08-26T00:00:00-04:002026-08-26T00:00:00-04:00TWiR Contributorstag:this-week-in-rust.org,2026-08-26:/blog/2026/08/26/this-week-in-rust-666/

<p>Hello and welcome to another issue of <em>This Week in Rust</em>! <a href="https://www.rust-lang.org/">Rust</a> is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at <a href="https://bsky.app/profile/thisweekinrust.bsky.social">@thisweekinrust.bsky.social</a> on Bluesky or <a href="https://mastodon.social/@thisweekinrust">@ThisWeekinRust</a> on mastodon.social …</p>

<p>Hello and welcome to another issue of <em>This Week in Rust</em>! <a href="https://www.rust-lang.org/">Rust</a> is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at <a href="https://bsky.app/profile/thisweekinrust.bsky.social">@thisweekinrust.bsky.social</a> on Bluesky or <a href="https://mastodon.social/@thisweekinrust">@ThisWeekinRust</a> on mastodon.social, or <a href="https://github.com/rust-lang/this-week-in-rust">send us a pull request</a>. Want to get involved? <a href="https://github.com/rust-lang/rust/blob/main/CONTRIBUTING.md">We love contributions</a>.</p> <p><em>This Week in Rust</em> is openly developed <a href="https://github.com/rust-lang/this-week-in-rust">on GitHub</a> and archives can be viewed at <a href="https://this-week-in-rust.org/">this-week-in-rust.org</a>. If you find any errors in this week's issue, <a href="https://github.com/rust-lang/this-week-in-rust/pulls">please submit a PR</a>.</p> <p>Want TWIR in your inbox? <a href="https://this-week-in-rust.us11.list-manage.com/subscribe?u=fd84c1c757e02889a9b08d289&amp;id=0ed8b72485">Subscribe here</a>.</p> <h2 id="updates-from-rust-community"><a class="toclink" href="#updates-from-rust-community">Updates from Rust Community</a></h2> <h3 id="official"><a class="toclink" href="#official">Official</a></h3> <ul> <li><a href="https://blog.rust-lang.org/2026/08/26/announcing-our-first-maintainers-in-residence/">Announcing our first Maintainers in Residence</a></li> <li><a href="https://blog.rust-lang.org/2026/08/21/enabling-next-solver-on-nightly/">Enabling the next-generation trait solver on nightly</a></li> <li><a href="https://blog.rust-lang.org/2026/08/20/supply-chain-attack-on-arrayref/">Supply chain attack on arrayref</a></li> <li><a href="https://blog.rust-lang.org/inside-rust/2026/08/19/overloading-experiment/">Rust Function Overloading - Call for Experimentation</a></li> </ul> <h3 id="projecttooling-updates"><a class="toclink" href="#projecttooling-updates">Project/Tooling Updates</a></h3> <ul> <li><a href="https://hacks.mozilla.org/2026/08/intent-to-ship-jpeg-xl/">Intent to Ship: JPEG XL – Mozilla Hacks - the Web developer blog</a></li> </ul> <h3 id="observationsthoughts"><a class="toclink" href="#observationsthoughts">Observations/Thoughts</a></h3> <ul> <li><a href="https://bughunters.google.com/blog/scaling-memory-safety">Scaling Memory Safety: AI-Assisted Rewrites of C/C++ Dependencies to Rust</a></li> <li><a href="https://pointersgonewild.com/2026-08-25-replacing-a-rust-enum-with-a-64-bit-word/">Replacing a Rust Enum with a 64-bit Word Made My Interpreter 17% Faster</a></li> <li><a href="https://blog.goose.love/posts/three-seconds-of-compilation-shaved-by-metadata-analysis/">3 Seconds of compilation shaved by metadata analysis</a></li> <li><a href="https://msj.prose.sh/epaper-retained-state">Your E-Paper Panel Isn't Broken: How Retained State Makes Drivers Look Buggy</a></li> <li><a href="https://developerlife.com/2026/08/22/to-async-or-not-to-async-rust-mcp-server/">To Async or Not to Async: Building a Rust MCP Server for rust-analyzer</a></li> <li><a href="https://akesson.io/wordtree/">One trie, three jobs, zero benchmarks won</a></li> <li><a href="https://kerkour.com/fixing-rust-supply-chain-security">Fixing Rust's supply chain security: The good, the bad and the ugly</a></li> </ul> <h3 id="rust-walkthroughs"><a class="toclink" href="#rust-walkthroughs">Rust Walkthroughs</a></h3> <ul> <li><a href="https://dev.to/yetmike/the-22-rust-errors-every-beginner-hits-in-the-order-they-hit-them-13gi">Rust errors every beginner hits</a></li> <li><a href="https://blog.sheerluck.dev/posts/understanding-rust-variables-and-types-by-building-a-scientific-calculator/">Build a Scientific Calculator in Rust - Understanding Variables and Types</a></li> <li><a href="https://flakm.com/posts/sqlx_caches_til/">Proving SQLx’s Statement Cache with bpftrace</a></li> <li><a href="https://labs.leaningtech.com/blog/browserpod-rust">Beyond WASI: Rust applications in-browser</a></li> </ul> <h3 id="miscellaneous"><a class="toclink" href="#miscellaneous">Miscellaneous</a></h3> <ul> <li><a href="https://rustfoundation.org/media/jetbrains-partners-with-the-rust-foundation-for-an-ai-livestream-series/">JetBrains Partners with the Rust Foundation for an AI Livestream</a></li> </ul> <h2 id="crate-of-the-week"><a class="toclink" href="#crate-of-the-week">Crate of the Week</a></h2> <p>This week's crate is <a href="https://github.com/swiftlogicsystems/swifttopology">swift-topomap</a>, a microarchitectural observability tool.</p> <p>Thanks to <a href="https://users.rust-lang.org/t/crate-of-the-week/2704/1658">Ankur Rathore</a> for the self-suggestion!</p> <p><a href="https://users.rust-lang.org/t/crate-of-the-week/2704">Please submit your suggestions and votes for next week</a>!</p> <h2 id="calls-for-testing"><a class="toclink" href="#calls-for-testing">Calls for Testing</a></h2> <p>An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.</p> <p>If you are a feature implementer and would like your RFC to appear in this list, add a <code>call-for-testing</code> label to your RFC along with a comment providing testing instructions and/or guidance on which aspect(s) of the feature need testing.</p> <h5 id="rust"><a class="toclink" href="#rust"><a href="https://github.com/rust-lang/rust/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Rust</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/rust/issues/155451">Tracking Issue for <code>--remap-path-scope</code> in rustdoc</a></li> </ul> <h5 id="cargo"><a class="toclink" href="#cargo"><a href="https://github.com/rust-lang/cargo/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Cargo</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/cargo/issues/15495">Tracking Issue for <code>-Zembed-metadata</code></a></li> </ul> <p><em>No calls for testing were issued this week by <a href="https://github.com/rust-lang/rustup/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Rustup</a> or <a href="https://github.com/rust-lang/rfcs/issues?q=label%3Acall-for-testing%20state%3Aopen">Rust language RFCs</a>.</em></p> <p><a href="https://github.com/rust-lang/this-week-in-rust/issues">Let us know</a> if you would like your feature to be tracked as a part of this list.</p> <h2 id="call-for-participation-projects-and-speakers"><a class="toclink" href="#call-for-participation-projects-and-speakers">Call for Participation; projects and speakers</a></h2> <h3 id="cfp-projects"><a class="toclink" href="#cfp-projects">CFP - Projects</a></h3> <p>Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!</p> <p>Some of these tasks may also have mentors available, visit the task page for more information.</p> <!-- CFPs go here, use this format: * [project name - title of issue](URL to issue) --> <ul> <li><a href="https://github.com/lacs-project/sysknife/issues/237">sysknife - Split the Ubuntu-only actions out of DEBIAN_ONLY_ACTIONS</a></li> <li><a href="https://github.com/lacs-project/sysknife/issues/238">sysknife - Make Debian eligible: a version floor of 12, and a reason in is_supported</a></li> <li><a href="https://github.com/lacs-project/sysknife/issues/239">sysknife - Debian's default firewall is nftables, and the catalogue has no nftables vocabulary</a></li> </ul> <!-- or if none - *No Calls for participation were submitted this week.* --> <ul> <li><a href="https://github.com/kkir/stomatopod/issues/40">stomatopod - Add a Docker Compose healthcheck on /health</a></li> <li><a href="https://github.com/kkir/stomatopod/issues/41">stomatopod - Add a custom GitHub social preview image</a></li> <li><a href="https://github.com/kkir/stomatopod/issues/42">stomatopod - Document the v0.1.0 GHCR tag next to :latest</a></li> </ul> <p>If you are a Rust project owner and are looking for contributors, please submit tasks <a href="https://github.com/rust-lang/this-week-in-rust?tab=readme-ov-file#call-for-participation-guidelines">here</a> or through a <a href="https://github.com/rust-lang/this-week-in-rust">PR to TWiR</a> or by reaching out on <a href="https://bsky.app/profile/thisweekinrust.bsky.social">Bluesky</a> or <a href="https://mastodon.social/@thisweekinrust">Mastodon</a>!</p> <h3 id="cfp-events"><a class="toclink" href="#cfp-events">CFP - Events</a></h3> <p>Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.</p> <!-- CFPs go here, use this format: * [**event name**](URL to CFP)| Date CFP closes in YYYY-MM-DD | city,state,country | Date of event in YYYY-MM-DD --> <!-- or if none - *No Calls for papers or presentations were submitted this week.* --> <p>If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a <a href="https://github.com/rust-lang/this-week-in-rust">PR to TWiR</a> or by reaching out on <a href="https://bsky.app/profile/thisweekinrust.bsky.social">Bluesky</a> or <a href="https://mastodon.social/@thisweekinrust">Mastodon</a>!</p> <h2 id="updates-from-the-rust-project"><a class="toclink" href="#updates-from-the-rust-project">Updates from the Rust Project</a></h2> <p>593 pull requests were <a href="https://github.com/search?q=is%3Apr+org%3Arust-lang+is%3Amerged+merged%3A2026-08-18..2026-08-25">merged in the last week</a></p> <h4 id="compiler"><a class="toclink" href="#compiler">Compiler</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust/pull/161274">add a cache to the <code>WfPredicates</code> visitor</a></li> <li><a href="https://github.com/rust-lang/rust/pull/157949">allow self in const generics</a></li> <li><a href="https://github.com/rust-lang/rust/pull/159940">eliminate some buggy <code>unreachable!()</code>s in <code>expand_</code>(<code>option_</code>)<code>env()</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/160619">enable <code>-Znext-solver</code> on nightly by default</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161211">optimize <code>DeepRejectCtxt</code></a></li> </ul> <h4 id="library"><a class="toclink" href="#library">Library</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust/pull/159098">add <code>Arc/Rc::strong_count_from_raw</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/160136">add <code>Default</code> implementation for <code>std::sync::Once</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/156160">add symmetric PartialEq impls for <code>Vec</code>, <code>&amp;[T]</code>, <code>&amp;mut [T]</code> versus <code>Cow&lt;'_, [T]&gt;</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/159954">core: implement float conversion methods</a></li> <li><a href="https://github.com/rust-lang/rust/pull/160563">make <code>BorrowedCursor&lt;'a, T&gt;</code> covariant in <code>'a</code> and drop an indirection</a></li> <li><a href="https://github.com/rust-lang/rust/pull/160819">rework <code>div_ceil</code> for nonzero integers</a></li> <li><a href="https://github.com/rust-lang/rust/pull/160299">stabilize <code>bool::toggle</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/155499">stabilize never type</a></li> </ul> <h4 id="cargo_1"><a class="toclink" href="#cargo_1">Cargo</a></h4> <ul> <li><a href="https://github.com/rust-lang/cargo/pull/17382"><code>config</code>: Add build.fingerprint</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17370">fix <code>git gc</code> with <code>safe.bareRepository=explicit</code></a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17377">install cargo tools with locked dependencies</a></li> </ul> <h4 id="rustdoc"><a class="toclink" href="#rustdoc">Rustdoc</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust/pull/159583">add new <code>invalid_markdown_table</code> rustdoc lint</a></li> <li><a href="https://github.com/rust-lang/rust/pull/160639">only generate search DOM elements if the search is actually needed</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161340">enable scrolling only on table/code</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161553">fix issue preventing "read more" links from generating</a></li> </ul> <h4 id="rustfmt"><a class="toclink" href="#rustfmt">Rustfmt</a></h4> <ul> <li><a href="https://github.com/rust-lang/rustfmt/pull/7063">fix ICE on <code>for await</code> loops with separated keyword tokens</a></li> <li><a href="https://github.com/rust-lang/rustfmt/pull/7005">fix brace placement for multiline control flow</a></li> <li><a href="https://github.com/rust-lang/rustfmt/pull/6802">fix comments rewritten too long</a></li> <li><a href="https://github.com/rust-lang/rustfmt/pull/7066">correct the span used when rewriting <code>ast::TyKind::FnPtr</code></a></li> <li><a href="https://github.com/rust-lang/rustfmt/pull/7064">correct visibility and defaultness order on associated impl type alias</a></li> <li><a href="https://github.com/rust-lang/rustfmt/pull/7042">inconsistent formatting of doc comments in macros</a></li> </ul> <h4 id="clippy"><a class="toclink" href="#clippy">Clippy</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust/pull/159642">optimize Clippy with PGO</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17445"><code>unnecessary_fold</code>: lint folding over an Option's iterator</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17589"><code>unused_trait_names</code>: make the suggestion nicer</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17575">avoid <code>manual_assert_eq</code> for byte slice-like types</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17564">don't fire <code>manual_contains</code> when both sides use the slice element</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17601">fix <code>large_futures</code> ICE with the next solver</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17547">avoid <code>double_must_use</code> in macro-generated code</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17598">make <code>needless_bool</code> less aggressive for chained <code>if</code>s</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17584">perf: check <code>first_node_in_macro</code> before the root macro walk in <code>useless_format</code></a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17127">remove broken suggestion for <code>blocks_in_conditions</code></a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17600">suggest <code>hypot</code> for <code>x.mul_add(x, y * y).sqrt()</code></a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17537">suggest <code>is_ok/is_err</code> for boolean Result mappings</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/16493">trigger <code>integer_division_remainder_used</code> on <code>DivAssign</code>/<code>RemAssign</code></a></li> </ul> <h4 id="rust-analyzer"><a class="toclink" href="#rust-analyzer">Rust-Analyzer</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23202"><code>hir</code>: Use expression store of parent body if available</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23216">adds-arrow unmap ranges when fn inside macro</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23186">allow <code>asm!</code> label blocks to diverge</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23201">prevent stack overflow for recursive ADT layouts</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23079">optimize the heck out of the storage of token trees</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23214">use Cargo build directory for flycheck logs</a></li> </ul> <h3 id="rust-compiler-performance-triage"><a class="toclink" href="#rust-compiler-performance-triage">Rust Compiler Performance Triage</a></h3> <p>A busy week, with a continued stream of improvements to the next trait solver and next borrow check implementations. Other than those changes, the week was pretty quiet for performance.</p> <p>Triage done by <strong>@simulacrum</strong>. Revision range: <a href="https://perf.rust-lang.org/?start=8fa1c96cfd489e4c27654c144ae871ce2c4db6c6&amp;end=9a4ad59ae3073b013cd62f53f8349ddc61a012e8&amp;absolute=false&amp;stat=instructions%3Au">8fa1c96c..9a4ad59a</a></p> <p>2 Regressions, 4 Improvements, 2 Mixed; 2 of them in rollups. 28 artifact comparisons made in total.</p> <p><a href="https://github.com/rust-lang/rustc-perf/blob/main/triage/2026/2026-08-23.md">Full report here</a></p> <h3 id="approved-rfcs"><a class="toclink" href="#approved-rfcs"><a href="https://github.com/rust-lang/rfcs/commits/master">Approved RFCs</a></a></h3> <p>Changes to Rust follow the Rust <a href="https://github.com/rust-lang/rfcs#rust-rfcs">RFC (request for comments) process</a>. These are the RFCs that were approved for implementation this week:</p> <ul> <li><em>No RFCs were approved this week.</em></li> </ul> <h3 id="final-comment-period"><a class="toclink" href="#final-comment-period">Final Comment Period</a></h3> <p>Every week, <a href="https://www.rust-lang.org/team.html">the team</a> announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.</p> <h4 id="tracking-issues-prs"><a class="toclink" href="#tracking-issues-prs">Tracking Issues &amp; PRs</a></h4> <h5 id="rust_1"><a class="toclink" href="#rust_1"><a href="https://github.com/rust-lang/rust/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Rust</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/rust/pull/161280">make target feature ABI check a hard error on ARM</a></li> <li><a href="https://github.com/rust-lang/rust/pull/160534">stabilize smart pointer map functions</a></li> <li><a href="https://github.com/rust-lang/rust/pull/160564">volatile: allow accesses to non-AM memory to trap</a></li> <li><a href="https://github.com/rust-lang/rust/pull/148605">Stabilize the <code>supertrait_item_shadowing</code> feature</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161081">Add intrinsics for integer minimum and maximum</a></li> <li><a href="https://github.com/rust-lang/rust/pull/158303">Always escape grapheme extenders in <code>str::escape_debug</code></a></li> </ul> <h5 id="rust-rfcs"><a class="toclink" href="#rust-rfcs"><a href="https://github.com/rust-lang/rfcs/issues?q=state%3Aopen%20label%3Afinal-comment-period%20state%3Aopen">Rust RFCs</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/rfcs/pull/3999">Change <code>i686-pc-windows-msvc</code> from Tier 1 with host tools =&gt; Tier 1 without host tools</a></li> </ul> <h5 id="cargo_2"><a class="toclink" href="#cargo_2"><a href="https://github.com/rust-lang/cargo/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Cargo</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/cargo/pull/17335">feat(resolver): Stabilize min-publish-age</a></li> </ul> <h5 id="compiler-team-mcps-only"><a class="toclink" href="#compiler-team-mcps-only"><a href="https://github.com/rust-lang/compiler-team/issues?q=label%3Amajor-change%20label%3Afinal-comment-period%20state%3Aopen">Compiler Team</a> <a href="https://forge.rust-lang.org/compiler/mcp.html">(MCPs only)</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/compiler-team/issues/1026">Add <code>codeview_annotation</code> intrinsic</a></li> </ul> <h5 id="leadership-council"><a class="toclink" href="#leadership-council"><a href="https://github.com/rust-lang/leadership-council/issues?q=state%3Aopen%20label%3Afinal-comment-period%20state%3Aopen">Leadership Council</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/leadership-council/pull/286">Update PD election process based on 2025 feedback</a></li> <li><a href="https://github.com/rust-lang/leadership-council/issues/308">Create an LLM policy team</a></li> </ul> <p><em>No Items entered Final Comment Period this week for <a href="https://github.com/rust-lang/lang-team/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Language Team</a>, <a href="https://github.com/rust-lang/reference/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Language Reference</a> or <a href="https://github.com/rust-lang/unsafe-code-guidelines/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Unsafe Code Guidelines</a>.</em> Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.</p> <h3 id="new-and-updated-rfcs"><a class="toclink" href="#new-and-updated-rfcs"><a href="https://github.com/rust-lang/rfcs/pulls">New and Updated RFCs</a></a></h3> <ul> <li><a href="https://github.com/rust-lang/rfcs/pull/4003">Add <code>core::ffi::c_longdouble</code></a></li> <li><a href="https://github.com/rust-lang/rfcs/pull/4001">RFC: add <code>freeze</code> operation</a></li> </ul> <h2 id="upcoming-events"><a class="toclink" href="#upcoming-events">Upcoming Events</a></h2> <p>Rusty Events between 2026-08-26 - 2026-09-23 🦀</p> <h3 id="virtual"><a class="toclink" href="#virtual">Virtual</a></h3> <ul> <li>2026-08-26 | Virtual (Cardiff, UK) | <a href="https://www.meetup.com/rust-and-c-plus-plus-in-cardiff">Rust and C++ Cardiff</a><ul> <li><a href="https://www.meetup.com/rust-and-c-plus-plus-in-cardiff/events/316083375/"><strong>Operating Systems Book Club: Lottery and Multi-CPU Scheduling</strong></a></li> </ul> </li> <li>2026-08-27 | Virtual (Berlin, DE) | <a href="https://www.meetup.com/rust-berlin">Rust Berlin</a><ul> <li><a href="https://www.meetup.com/rust-berlin/events/313345334/"><strong>Rust Hack and Learn</strong></a></li> </ul> </li> <li>2026-08-28 | Virtual | <a href="https://luma.com/rust-girona">Rust Girona</a><ul> <li><a href="https://luma.com/arkkrcj5"><strong>Sessió setmanal de codificació / Weekly coding session</strong></a></li> </ul> </li> <li>2026-08-31 | Virtual | <a href="https://luma.com/rust-maven">Rust 🦀 Maven</a><ul> <li><a href="https://luma.com/nwfmsdtf"><strong>Workshop: Add tests to an open source Rust project</strong></a></li> </ul> </li> <li>2026-09-01 | Virtual | <a href="https://luma.com/rust-maven">Rust 🦀 Maven</a><ul> <li><a href="https://luma.com/d9w26vav"><strong>Tauri: Cross-Platform desktop applications with Rust and web technologies</strong></a></li> </ul> </li> <li>2026-09-02 | Virtual (Indianapolis, IN, US) | <a href="https://www.meetup.com/indyrs/events/">Indy Rust</a><ul> <li><a href="https://www.meetup.com/indyrs/events/wqzhftyjcmbdb/"><strong>Indy.rs - with Social Distancing</strong></a></li> </ul> </li> <li>2026-09-02 | Virtual (Indianapolis, IN, US) | <a href="https://www.meetup.com/indyrs">Indy Rust</a><ul> <li><a href="https://www.meetup.com/indyrs/events/316107210/"><strong>Indy.rs - with Social Distancing</strong></a></li> </ul> </li> <li>2026-09-04 | Virtual | <a href="https://luma.com/rust-girona">Rust Girona</a><ul> <li><a href="https://luma.com/sqf4ux01"><strong>Sessió setmanal de codificació / Weekly coding session</strong></a></li> </ul> </li> <li>2026-09-06 | Virtual | <a href="https://luma.com/rust-maven">Rust 🦀 Maven</a><ul> <li><a href="https://luma.com/9lte7a58"><strong>Facts: Curated Knowledge for Humans and Agents</strong></a></li> </ul> </li> <li>2026-09-06 | Virtual (Dallas, TX, US) | <a href="https://www.meetup.com/dallasrust">Dallas Rust User Meetup</a><ul> <li><a href="https://www.meetup.com/dallasrust/events/316133872/"><strong>Rust Deep Learning: First Sunday</strong></a></li> </ul> </li> <li>2026-09-08 - 2026-09-11 | Hybrid (Montreal, CA) | <a href="https://rustconf.com/">RustConf 2026</a><ul> <li><a href="https://rustconf.com/"><strong>RustConf 2026</strong></a></li> </ul> </li> <li>2026-09-08 | Virtual (Dallas, TX, US) | <a href="https://www.meetup.com/dallasrust">Dallas Rust User Meetup</a><ul> <li><a href="https://www.meetup.com/dallasrust/events/310254774/"><strong>Second Tuesday</strong></a></li> </ul> </li> <li>2026-09-08 | Virtual (London, UK) | <a href="https://www.meetup.com/women-in-rust">Women in Rust</a><ul> <li><a href="https://www.meetup.com/women-in-rust/events/315859305/"><strong>👋 Community Catch Up</strong></a></li> </ul> </li> <li>2026-09-10 | Virtual | <a href="https://luma.com/rust-maven">Rust 🦀 Maven</a><ul> <li><a href="https://luma.com/rfbzk3ae"><strong>Solving Real-World Planning Problems in Rust with SolverForge</strong></a></li> </ul> </li> <li>2026-09-10 | Virtual (Berlin, DE) | <a href="https://www.meetup.com/rust-berlin">Rust Berlin</a><ul> <li><a href="https://www.meetup.com/rust-berlin/events/315691423/"><strong>Rust Hack and Learn</strong></a></li> </ul> </li> <li>2026-09-10 | Virtual (Nürnberg, DE) | <a href="https://www.meetup.com/rust-noris">Rust Nuremberg</a><ul> <li><a href="https://www.meetup.com/rust-noris/events/315619611/"><strong>Rust Nürnberg online</strong></a></li> </ul> </li> <li>2026-09-15 | Virtual (Washington, DC, US) | <a href="https://www.meetup.com/rustdc">Rust DC</a><ul> <li><a href="https://www.meetup.com/rustdc/events/fhvsztyjcmbtb/"><strong>Mid-month Rustful</strong></a></li> </ul> </li> <li>2026-09-16 | Hybrid (Vancouver, CA) | <a href="https://www.meetup.com/vancouver-rust">Vancouver Rust</a><ul> <li><a href="https://www.meetup.com/vancouver-rust/events/314233757/"><strong>Rust Study/Hack/Hang-out</strong></a></li> </ul> </li> <li>2026-09-17 | Hybrid (Seattle, WA, US) | <a href="https://www.meetup.com/join-srug">Seattle Rust User Group</a><ul> <li><a href="https://www.meetup.com/seattle-rust-user-group/events/315635881/"><strong>September, 2026 SRUG (Seattle Rust User Group) Meetup</strong></a></li> </ul> </li> <li>2026-09-18 | Virtual | <a href="https://luma.com/rust-girona">Rust Girona</a><ul> <li><a href="https://luma.com/ibaxicxv"><strong>Sessió setmanal de codificació / Weekly coding session</strong></a></li> </ul> </li> <li>2026-09-20 | Virtual (Dallas, TX, US) | <a href="https://www.meetup.com/dallasrust">Dallas Rust User Meetup</a><ul> <li><a href="https://www.meetup.com/dallasrust/events/316133974/"><strong>Rust Deep Learning: Third Sunday</strong></a></li> </ul> </li> <li>2026-09-22 | Virtual (Dallas, TX, US) | <a href="https://www.meetup.com/dallasrust">Dallas Rust User Meetup</a><ul> <li><a href="https://www.meetup.com/dallasrust/events/310254773/"><strong>Fourth Tuesday Rust Bookclub</strong></a></li> </ul> </li> </ul> <h3 id="africa"><a class="toclink" href="#africa">Africa</a></h3> <ul> <li>2026-09-08 | Johannesburg, ZA | <a href="https://www.meetup.com/johannesburg-rust-meetup">Johannesburg Rust Meetup</a><ul> <li><a href="https://www.meetup.com/johannesburg-rust-meetup/events/315750593/"><strong>Rust's extended standard library</strong></a></li> </ul> </li> </ul> <h3 id="asia"><a class="toclink" href="#asia">Asia</a></h3> <ul> <li>2026-08-29 | Pune, IN | <a href="https://hasgeek.com/rustpune/">Rust Pune</a><ul> <li><a href="https://hasgeek.com/rustpune/meetup-august-2026/"><strong>Rust Pune Meetup: August 2026</strong></a></li> </ul> </li> </ul> <h3 id="europe"><a class="toclink" href="#europe">Europe</a></h3> <ul> <li>2026-08-26 | Copenhagen, DK | <a href="https://www.meetup.com/copenhagen-rust-community">Copenhagen Rust Community</a><ul> <li><a href="https://www.meetup.com/copenhagen-rust-community/events/316180984/"><strong>Rust meetup #71 Sponsored by Factbird</strong></a></li> </ul> </li> <li>2026-08-26 | Dresden, DE | <a href="https://github.com/rust-dresden">Rust Dresden</a><ul> <li><a href="https://pretix.eu/rust-dresden/on-location-3"><strong>Third Meetup</strong></a></li> </ul> </li> <li>2026-08-27 | London, UK | <a href="https://www.meetup.com/rust-london-user-group">Rust London User Group</a><ul> <li><a href="https://www.meetup.com/rust-london-user-group/events/316197176/"><strong>LDN Talks August Community Showcase</strong></a></li> </ul> </li> <li>2026-08-27 | Manchester, UK | <a href="https://www.meetup.com/rust-manchester">Rust Manchester</a><ul> <li><a href="https://www.meetup.com/rust-manchester/events/315891530/"><strong>Rust Manchester August Talks</strong></a></li> </ul> </li> <li>2026-08-29 | Stockholm, SE | <a href="https://www.meetup.com/stockholm-rust">Stockholm Rust</a><ul> <li><a href="https://www.meetup.com/stockholm-rust/events/316130996/"><strong>Ferris' Fika Forum #29</strong></a></li> </ul> </li> <li>2026-09-08 | Paris, FR | <a href="https://www.meetup.com/rust-paris">Rust Paris</a><ul> <li><a href="https://www.meetup.com/rust-paris/events/316169040/"><strong>Rust meetup #87</strong></a></li> </ul> </li> <li>2026-09-14 - 2026-09-16 | Berlin, DE | <a href="https://oxidizeconf.com/">Oxidize 2026</a><ul> <li><a href="https://oxidizeconf.com/"><strong>Oxidize 2026</strong></a></li> </ul> </li> <li>2026-09-15 | Leipzig, DE | <a href="https://www.meetup.com/rust-modern-systems-programming-in-leipzig">Rust - Modern Systems Programming in Leipzig</a><ul> <li><a href="https://www.meetup.com/rust-modern-systems-programming-in-leipzig/events/313816477/"><strong>Reproducing scientific papers - with Rust &amp; "AI"</strong></a></li> </ul> </li> <li>2026-09-22 | Prague, CZ | <a href="https://www.meetup.com/rust-prague">Rust Prague</a><ul> <li><a href="https://www.meetup.com/rust-prague/events/316070376/"><strong>Rust Meetup Prague @ Rockwell Automation</strong></a></li> </ul> </li> </ul> <h3 id="north-america"><a class="toclink" href="#north-america">North America</a></h3> <ul> <li>2026-08-26 | Austin, TX, US | <a href="https://www.meetup.com/rust-atx">Rust ATX</a><ul> <li><a href="https://www.meetup.com/rust-atx/events/315171660/"><strong>Rust Lunch - Fareground</strong></a></li> </ul> </li> <li>2026-08-26 | Los Angeles, CA, US | <a href="https://www.meetup.com/rust-los-angeles">Rust Los Angeles</a><ul> <li><a href="https://www.meetup.com/rust-los-angeles/events/315963062/"><strong>Rust LA August! Rust in Quantum Computing</strong></a></li> </ul> </li> <li>2026-08-27 | Atlanta, GA, US | <a href="https://www.meetup.com/rust-atl">Rust Atlanta</a><ul> <li><a href="https://www.meetup.com/rust-atl/events/313539331/"><strong>Rust-Atl</strong></a></li> </ul> </li> <li>2026-09-03 | Mountain View, CA, US | <a href="https://www.meetup.com/hackerdojo">Hacker Dojo</a><ul> <li><a href="https://www.meetup.com/hackerdojo/events/316124372/"><strong>RUST MEETUP at HACKER DOJO</strong></a></li> </ul> </li> <li>2026-09-03 | Saint Louis, MO, US | <a href="https://www.meetup.com/stl-rust">STL Rust</a><ul> <li><a href="https://www.meetup.com/stl-rust/events/315603673/"><strong>Cryptography + Quantum Computers</strong></a></li> </ul> </li> <li>2026-09-08 - 2026-09-11 | Hybrid (Montreal, CA) | <a href="https://rustconf.com/">RustConf 2026</a><ul> <li><a href="https://rustconf.com/"><strong>RustConf 2026</strong></a></li> </ul> </li> <li>2026-09-09 | Montreal, CA | <a href="https://www.meetup.com/women-in-rust">Women in Rust</a><ul> <li><a href="https://www.meetup.com/women-in-rust/events/315773005/"><strong>RustConf Coffee Break Meetup</strong></a></li> </ul> </li> <li>2026-09-10 | Lehi, UT, US | <a href="https://www.meetup.com/utah-rust">Utah Rust</a><ul> <li><a href="https://www.meetup.com/utah-rust/events/316198046/"><strong>Hands-on Embedded Rust</strong></a></li> </ul> </li> <li>2026-09-10 | San Diego, CA, US | <a href="https://www.meetup.com/san-diego-rust">San Diego Rust</a><ul> <li><a href="https://www.meetup.com/san-diego-rust/events/315601104/"><strong>San Diego Rust September Meetup - Back in person!</strong></a></li> </ul> </li> <li>2026-09-15 | San Francisco, CA, US | <a href="https://www.meetup.com/san-francisco-rust-study-group">San Francisco Rust Study Group</a><ul> <li><a href="https://www.meetup.com/san-francisco-rust-study-group/events/314997217/"><strong>Rust Hacking in Person</strong></a></li> </ul> </li> <li>2026-09-16 | Hybrid (Vancouver, CA) | <a href="https://www.meetup.com/vancouver-rust">Vancouver Rust</a><ul> <li><a href="https://www.meetup.com/vancouver-rust/events/314233757/"><strong>Rust Study/Hack/Hang-out</strong></a></li> </ul> </li> <li>2026-09-17 | Hybrid (Seattle, WA, US) | <a href="https://www.meetup.com/join-srug">Seattle Rust User Group</a><ul> <li><a href="https://www.meetup.com/seattle-rust-user-group/events/315635881/"><strong>September, 2026 SRUG (Seattle Rust User Group) Meetup</strong></a></li> </ul> </li> <li>2026-09-17 | Mountain View, CA, US | <a href="https://www.meetup.com/hackerdojo">Hacker Dojo</a><ul> <li><a href="https://www.meetup.com/hackerdojo/events/316176445/"><strong>RUST MEETUP at HACKER DOJO</strong></a></li> </ul> </li> <li>2026-09-23 | Austin, TX, US | <a href="https://www.meetup.com/rust-atx">Rust ATX</a><ul> <li><a href="https://www.meetup.com/rust-atx/events/xvkdgtyjcmbfc/"><strong>Rust Lunch - Fareground</strong></a></li> </ul> </li> </ul> <h3 id="oceania"><a class="toclink" href="#oceania">Oceania</a></h3> <ul> <li>2026-08-27 | Melbourne, AU | <a href="https://www.meetup.com/rust-melbourne">Rust Melbourne</a><ul> <li><a href="https://www.meetup.com/rust-melbourne/events/315039490/"><strong>Rust Melbourne August 2026</strong></a></li> </ul> </li> </ul> <p>If you are running a Rust event please add it to the <a href="https://www.google.com/calendar/embed?src=apd9vmbc22egenmtu5l6c5jbfc%40group.calendar.google.com">calendar</a> to get it mentioned here. Please remember to add a link to the event too. Email the <a href="mailto:community-team@rust-lang.org">Rust Community Team</a> for access.</p> <h2 id="jobs"><a class="toclink" href="#jobs">Jobs</a></h2> <p>Please see the latest <a href="https://www.reddit.com/r/rust/comments/1vtuq1b/official_rrust_whos_hiring_thread_for_jobseekers/">Who's Hiring thread on r/rust</a></p> <h1 id="quote-of-the-week"><a class="toclink" href="#quote-of-the-week">Quote of the Week</a></h1> <blockquote> <p>I care about this community, including its human and social nature. I want others to appreciate those qualities, and I don't want to see them compromised and replaced by excessive machine-generated content.</p> </blockquote> <p>– <a href="https://users.rust-lang.org/t/use-of-ai-assitance-to-solve-issues-and-validate-to-reply/142029/11">Quine Dot on rust-users</a></p> <p>Thanks to <a href="https://users.rust-lang.org/t/twir-quote-of-the-week/328/1791">Jonas Fassbender</a> for the suggestion!</p> <p><a href="https://users.rust-lang.org/t/twir-quote-of-the-week/328">Please submit quotes and vote for next week!</a></p> <p>This Week in Rust is edited by:</p> <ul> <li><a href="https://github.com/nellshamrell">nellshamrell</a></li> <li><a href="https://github.com/llogiq">llogiq</a></li> <li><a href="https://github.com/ericseppanen">ericseppanen</a></li> <li><a href="https://github.com/extrawurst">extrawurst</a></li> <li><a href="https://github.com/U007D">U007D</a></li> <li><a href="https://github.com/mariannegoldin">mariannegoldin</a></li> <li><a href="https://github.com/bdillo">bdillo</a></li> <li><a href="https://github.com/opeolluwa">opeolluwa</a></li> <li><a href="https://github.com/bnchi">bnchi</a></li> <li><a href="https://github.com/KannanPalani57">KannanPalani57</a></li> <li><a href="https://github.com/tzilist">tzilist</a></li> </ul> <p><em>Email list hosting is sponsored by <a href="https://foundation.rust-lang.org/">The Rust Foundation</a></em></p> <p><small><a href="https://www.reddit.com/r/rust/comments/1vzh4xx/this_week_in_rust_666/">Discuss on r/rust</a></small></p>2026-08-19T00:00:00-04:002026-08-19T00:00:00-04:00TWiR Contributorstag:this-week-in-rust.org,2026-08-19:/blog/2026/08/19/this-week-in-rust-665/

<p>Hello and welcome to another issue of <em>This Week in Rust</em>! <a href="https://www.rust-lang.org/">Rust</a> is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at <a href="https://bsky.app/profile/thisweekinrust.bsky.social">@thisweekinrust.bsky.social</a> on Bluesky or <a href="https://mastodon.social/@thisweekinrust">@ThisWeekinRust</a> on mastodon.social …</p>

<p>Hello and welcome to another issue of <em>This Week in Rust</em>! <a href="https://www.rust-lang.org/">Rust</a> is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at <a href="https://bsky.app/profile/thisweekinrust.bsky.social">@thisweekinrust.bsky.social</a> on Bluesky or <a href="https://mastodon.social/@thisweekinrust">@ThisWeekinRust</a> on mastodon.social, or <a href="https://github.com/rust-lang/this-week-in-rust">send us a pull request</a>. Want to get involved? <a href="https://github.com/rust-lang/rust/blob/main/CONTRIBUTING.md">We love contributions</a>.</p> <p><em>This Week in Rust</em> is openly developed <a href="https://github.com/rust-lang/this-week-in-rust">on GitHub</a> and archives can be viewed at <a href="https://this-week-in-rust.org/">this-week-in-rust.org</a>. If you find any errors in this week's issue, <a href="https://github.com/rust-lang/this-week-in-rust/pulls">please submit a PR</a>.</p> <p>Want TWIR in your inbox? <a href="https://this-week-in-rust.us11.list-manage.com/subscribe?u=fd84c1c757e02889a9b08d289&amp;id=0ed8b72485">Subscribe here</a>.</p> <h2 id="updates-from-rust-community"><a class="toclink" href="#updates-from-rust-community">Updates from Rust Community</a></h2> <!-- Dear community contributors: Please read README.md for guidance on submissions. Each submitted link should be of the form: * [Title of the linked Page](https://example.com/my_article) If you add a link to a non-text content please prefix it with `[video]` or `[audio]`: * [video] [Title of the linked video](https://example.com/my_video_article) * [audio] [Title of the linked audio file](https://example.com/my_podcast) If you don't know which category to use, feel free to submit a PR anyway and just ask the editors to select the category. --> <h3 id="official"><a class="toclink" href="#official">Official</a></h3> <ul> <li><a href="https://blog.rust-lang.org/inside-rust/2026/08/18/reducing-target-dir-size-on-nightly/">Experiment in reducing target directory size on nightly</a></li> </ul> <h3 id="newsletters"><a class="toclink" href="#newsletters">Newsletters</a></h3> <ul> <li><a href="https://www.theembeddedrustacean.com/p/the-embedded-rustacean-issue-78">The Embedded Rustacean Issue #78</a></li> </ul> <h3 id="projecttooling-updates"><a class="toclink" href="#projecttooling-updates">Project/Tooling Updates</a></h3> <ul> <li><a href="https://dirkjan.ochtman.nl/writing/2026/08/13/announcing-oxish.html">OxiSH: a modern, memory-safe SSH server</a></li> <li><a href="https://hackmd.io/@s_haMSbyTAOWfoXc1aYNUg/Hka74gCwZg">A critical review of Xilem in 2026</a></li> <li><a href="https://github.com/plabayo/rama/releases/tag/rama-0.4.0">rama v0.4.0</a></li> </ul> <h3 id="observationsthoughts"><a class="toclink" href="#observationsthoughts">Observations/Thoughts</a></h3> <ul> <li><a href="https://rolandsdev.blog/posts/from-go-to-rust/">From Go to Rust</a></li> <li><a href="https://besok.github.io/posts/what-zig-felt-like-coming-from-rust/">What Zig felt like, coming from Rust</a></li> <li><a href="https://domenkozar.com/2026/08/13/i-want-extern-fil-c/">I want extern "fil-c"</a></li> <li><a href="https://blog.yoshuawuyts.com/four-levels-of-in-place-initialization/">Four levels of in-place initialization</a></li> <li><a href="https://predr.ag/blog/protecting-the-rust-stdlib-from-breakage/">Protecting the Rust standard library from accidental breakage</a></li> <li><a href="https://murlet.com/blog/rendering-wgpu-under-electron/">Zero-copy wgpu rendering inside an Electron app</a></li> <li><a href="https://ai2rules.dev/blog/the-lint-that-was-off-by-default/">The Lint That Would Have Caught It Is Off by Default</a></li> <li>[video] [series] <a href="https://youtu.be/q4GdfJNKI-M">Implementing State Machines (Part 1)</a></li> </ul> <h3 id="rust-walkthroughs"><a class="toclink" href="#rust-walkthroughs">Rust Walkthroughs</a></h3> <ul> <li><a href="https://niss36.github.io/blog/01-gentle-intro-to-embedded-rust/">A gentle introduction to Embedded Rust</a></li> <li><a href="https://learning-rust.github.io/labs/building-a-containerized-restful-api/">Building a Containerized RESTful API</a></li> </ul> <h3 id="research"><a class="toclink" href="#research">Research</a></h3> <ul> <li><a href="https://arxiv.org/pdf/2608.13759">GPU Offload in Rust: Portable, Safe, and Fast</a></li> </ul> <h3 id="miscellaneous"><a class="toclink" href="#miscellaneous">Miscellaneous</a></h3> <ul> <li><a href="https://joshlf.com/posts/netstack-fm-ep-10/">Zerocopy with Joshua Liebow-Feeser</a></li> </ul> <h2 id="crate-of-the-week"><a class="toclink" href="#crate-of-the-week">Crate of the Week</a></h2> <p>This week's crate is <a href="https://crates.io/crates/tokio_with_wasm">tokio_with_wasm</a>, a crate that lets a single tokio codebase run both natively and in web browsers.</p> <p>Thanks to <a href="https://users.rust-lang.org/t/crate-of-the-week/2704/1654">Kim Dong-Hyun</a> for the self-suggestion!</p> <p><a href="https://users.rust-lang.org/t/crate-of-the-week/2704">Please submit your suggestions and votes for next week</a>!</p> <h2 id="calls-for-testing"><a class="toclink" href="#calls-for-testing">Calls for Testing</a></h2> <p>An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.</p> <p>If you are a feature implementer and would like your RFC to appear in this list, add a <code>call-for-testing</code> label to your RFC along with a comment providing testing instructions and/or guidance on which aspect(s) of the feature need testing.</p> <h5 id="cargo"><a class="toclink" href="#cargo"><a href="https://github.com/rust-lang/cargo/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Cargo</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/cargo/issues/15495">Tracking Issue for <code>-Zembed-metadata</code></a></li> </ul> <p><em>No calls for testing were issued this week by <a href="https://github.com/rust-lang/rust/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Rust</a>, <a href="https://github.com/rust-lang/rustup/issues?q=state%3Aopen%20label%3Acall-for-testing%20state%3Aopen">Rustup</a> or <a href="https://github.com/rust-lang/rfcs/issues?q=label%3Acall-for-testing%20state%3Aopen">Rust language RFCs</a>.</em></p> <p><a href="https://github.com/rust-lang/this-week-in-rust/issues">Let us know</a> if you would like your feature to be tracked as a part of this list.</p> <h2 id="call-for-participation-projects-and-speakers"><a class="toclink" href="#call-for-participation-projects-and-speakers">Call for Participation; projects and speakers</a></h2> <h3 id="cfp-projects"><a class="toclink" href="#cfp-projects">CFP - Projects</a></h3> <p>Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!</p> <p>Some of these tasks may also have mentors available, visit the task page for more information.</p> <!-- CFPs go here, use this format: * [project name - title of issue](URL to issue) --> <ul> <li><a href="https://github.com/lacs-project/sysknife/issues/215">sysknife - Export the audit chain rows, not just the verify verdict</a></li> <li><a href="https://github.com/lacs-project/sysknife/issues/216">sysknife - Expose the read-only actions as MCP tools without exposing AptUpdate</a></li> <li><a href="https://github.com/lacs-project/sysknife/issues/217">sysknife - Record a current Fedora Atomic validation run</a></li> <li><a href="https://github.com/yantrikos/yantrikdb/issues/100">YantrikDB - Migrate the 7 remaining manual SAVEPOINT sites to SavepointGuard (panic-unwind hole + 7 hand-rolled copies of the unwind rule)</a></li> <li><a href="https://github.com/Tuntii/RustAPI/issues/261">RustAPI - chore: issue templates, drop missing triage label, MSRV 1.85 (easy)</a></li> <li><a href="https://github.com/Tuntii/KayaDB/issues/46">KayaDB - test: one extra named malformed WAL / command-frame decoder case (easy)</a></li> <li><a href="https://github.com/luohoa97/cordial/issues/11">Cordial - GameActivity.getWaterfallInsets has the wrong JNI descriptor</a></li> <li><a href="https://github.com/luohoa97/cordial/issues/12">Cordial - ro.soc.manufacturer is answered with an empty string</a></li> <li><a href="https://github.com/luohoa97/cordial/issues/13">Cordial - Map which FLog channels take a number and which take a severity name</a></li> </ul> <!-- or if none - *No Calls for participation were submitted this week.* --> <p>If you are a Rust project owner and are looking for contributors, please submit tasks <a href="https://github.com/rust-lang/this-week-in-rust?tab=readme-ov-file#call-for-participation-guidelines">here</a> or through a <a href="https://github.com/rust-lang/this-week-in-rust">PR to TWiR</a> or by reaching out on <a href="https://bsky.app/profile/thisweekinrust.bsky.social">Bluesky</a> or <a href="https://mastodon.social/@thisweekinrust">Mastodon</a>!</p> <h3 id="cfp-events"><a class="toclink" href="#cfp-events">CFP - Events</a></h3> <p>Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.</p> <!-- CFPs go here, use this format: * [**event name**](URL to CFP)| Date CFP closes in YYYY-MM-DD | city,state,country | Date of event in YYYY-MM-DD --> <!-- or if none - *No Calls for papers or presentations were submitted this week.* --> <p>If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a <a href="https://github.com/rust-lang/this-week-in-rust">PR to TWiR</a> or by reaching out on <a href="https://bsky.app/profile/thisweekinrust.bsky.social">Bluesky</a> or <a href="https://mastodon.social/@thisweekinrust">Mastodon</a>!</p> <h2 id="updates-from-the-rust-project"><a class="toclink" href="#updates-from-the-rust-project">Updates from the Rust Project</a></h2> <p>613 pull requests were <a href="https://github.com/search?q=is%3Apr+org%3Arust-lang+is%3Amerged+merged%3A2026-08-11..2026-08-18">merged in the last week</a></p> <h4 id="compiler"><a class="toclink" href="#compiler">Compiler</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust/pull/160892">inline some hot new-solver functions</a></li> <li><a href="https://github.com/rust-lang/rust/pull/155942">stabilize <code>-Zprofile-sample-use</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/158504">stabilize <code>extern "custom"</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/161127">make <code>ShardedHashMap::with_capacity</code> split capacity between shards</a></li> <li><a href="https://github.com/rust-lang/rust/pull/160605">three new-solver speedups</a></li> <li><a href="https://github.com/rust-lang/rust/pull/158436">use <code>TyOrConstInferVar</code> in the next solver, fix #158441</a></li> </ul> <h4 id="library"><a class="toclink" href="#library">Library</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust/pull/158885">add <code>core::num::Complex</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/160731"><code>Arc</code>: remove unnecessary <code>fmt::Display</code> use for overflow assertion</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161250">core/num: implement feature <code>float_nan_to</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/159963">core: implement <code>FusedIterator</code> for <code>StepBy</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/160687">experiment: add <code>core::cmp::smallest</code> and <code>core::cmp::largest</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/160203"><code>Iterator::{min,max}(_by_key)</code> should use overridden <code>min</code>/<code>max</code>/<code>lt</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/161055"><code>offload!</code> function-like macro</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161040">optimize CStr backing slice bounds checks</a></li> <li><a href="https://github.com/rust-lang/rust/pull/160408">single-byte ASCII searcher for <code>StrSearcherImpl(pattern.rs)</code></a></li> </ul> <h4 id="cargo_1"><a class="toclink" href="#cargo_1">Cargo</a></h4> <ul> <li><a href="https://github.com/rust-lang/cargo/pull/17349"><code>trim-paths</code>: honor workspace prefix override from env</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17274"><code>frontmatter</code>: Don't panic on a short closing fence before a non-ASCII char</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17353"><code>min-publish-age</code>: remove <code>registry.min-publish-age</code></a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17267">enable <code>-Zembed-metadata=no</code> by default on nightly Cargo</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17354">re-stabilize build-dir layout v2</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17356">remove unremap file when running cargo clean -p in new build-dir layout</a></li> </ul> <h4 id="rustdoc"><a class="toclink" href="#rustdoc">Rustdoc</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust/pull/160882">add basic <code>splat</code> support to <code>rustdoc</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/137858">add new <code>unused_footnote_definition</code> rustdoc lint</a></li> <li><a href="https://github.com/rust-lang/rust/pull/161003">also warn if an invalid <code>doc</code> attribute is used on a macro invocation</a></li> </ul> <h4 id="clippy"><a class="toclink" href="#clippy">Clippy</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17465">add <code>option_zip_none</code> lint</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17308">clean-up <code>used_underscore_*</code></a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17557">fix ICE on <code>unnecessary_rest_pattern</code> for TyAlias</a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17045">fix <code>unfulfilled_lint_expectations</code> incorrectly triggered by <code>#[expect(clippy::let_and_return)]</code></a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17396">fix duplicate diagnostics for <code>min_rust_version_invalid_attr</code></a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17581">perf: check fn kind before the expansion walk in <code>missing_const_for_thread_local</code></a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17582">perf: resolve the callee before the expansion walk in <code>VecArgs::hir</code></a></li> <li><a href="https://github.com/rust-lang/rust-clippy/pull/17276">perf: run <code>in_external_macro</code> after the cheap checks in five hot lint paths</a></li> </ul> <h4 id="rust-analyzer"><a class="toclink" href="#rust-analyzer">Rust-Analyzer</a></h4> <ul> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23159">parser: frontmatter error path for UTF-8</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23118">avoid panic for mismatched associated type parameters</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/22225">check original type for <code>replace_arith_op</code></a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23127">consider loop containing <code>break expr</code> to diverge if <code>expr</code> is diverging</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23122">do not panic when defined in macro from input</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23134">don't error on tail comma for some macro</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23147">emit E0600 when unary <code>!</code>/<code>-</code> is applied to unsupported type</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23111">every workspace should have a proc-macro server</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23140">fix <code>rustc_private</code> support for <code>rustc_proc_macro</code></a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23115">lower range expressions in hir lowering</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23138">return an error const to the solver when consteval fails</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/23109">offer <code>replace_arith</code> on references to ints</a></li> <li><a href="https://github.com/rust-lang/rust-analyzer/pull/22325">support Reborrow and CoerceShared built-in derives</a></li> </ul> <h3 id="rust-compiler-performance-triage"><a class="toclink" href="#rust-compiler-performance-triage">Rust Compiler Performance Triage</a></h3> <p>There were almost no regressions this week, while the next trait solver saw several significant performance improvements!</p> <p>Triage done by <strong>@kobzol</strong>. Revision range: <a href="https://perf.rust-lang.org/?start=771916f9028e7fe56d2685f2c4f698de5d7d6a45&amp;end=8fa1c96cfd489e4c27654c144ae871ce2c4db6c6&amp;absolute=false&amp;stat=instructions%3Au">771916f9..8fa1c96c</a></p> <p><strong>Summary</strong>:</p> <table> <thead> <tr> <th style="text-align: center;">(instructions:u)</th> <th style="text-align: center;">mean</th> <th style="text-align: center;">range</th> <th style="text-align: center;">count</th> </tr> </thead> <tbody> <tr> <td style="text-align: center;">Regressions ❌ <br /> (primary)</td> <td style="text-align: center;">0.4%</td> <td style="text-align: center;">[0.2%, 0.5%]</td> <td style="text-align: center;">6</td> </tr> <tr> <td style="text-align: center;">Regressions ❌ <br /> (secondary)</td> <td style="text-align: center;">0.6%</td> <td style="text-align: center;">[0.2%, 1.0%]</td> <td style="text-align: center;">17</td> </tr> <tr> <td style="text-align: center;">Improvements ✅ <br /> (primary)</td> <td style="text-align: center;">-0.5%</td> <td style="text-align: center;">[-1.7%, -0.2%]</td> <td style="text-align: center;">166</td> </tr> <tr> <td style="text-align: center;">Improvements ✅ <br /> (secondary)</td> <td style="text-align: center;">-2.3%</td> <td style="text-align: center;">[-16.0%, -0.1%]</td> <td style="text-align: center;">219</td> </tr> <tr> <td style="text-align: center;">All ❌✅ (primary)</td> <td style="text-align: center;">-0.5%</td> <td style="text-align: center;">[-1.7%, 0.5%]</td> <td style="text-align: center;">172</td> </tr> </tbody> </table> <p>0 Regressions, 6 Improvements, 7 Mixed; 4 of them in rollups 50 artifact comparisons made in total</p> <p><a href="https://github.com/rust-lang/rustc-perf/blob/ca70287715cb2c2b10aed04506acb0ee5574c3fe/triage/2026/2026-08-18.md">Full report here</a>.</p> <h3 id="approved-rfcs"><a class="toclink" href="#approved-rfcs"><a href="https://github.com/rust-lang/rfcs/commits/master">Approved RFCs</a></a></h3> <p>Changes to Rust follow the Rust <a href="https://github.com/rust-lang/rfcs#rust-rfcs">RFC (request for comments) process</a>. These are the RFCs that were approved for implementation this week:</p> <ul> <li><a href="https://github.com/rust-lang/rfcs/pull/3984">RFC: Refactor the libs team</a></li> </ul> <h3 id="final-comment-period"><a class="toclink" href="#final-comment-period">Final Comment Period</a></h3> <p>Every week, <a href="https://www.rust-lang.org/team.html">the team</a> announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.</p> <h4 id="tracking-issues-prs"><a class="toclink" href="#tracking-issues-prs">Tracking Issues &amp; PRs</a></h4> <h5 id="rust"><a class="toclink" href="#rust"><a href="https://github.com/rust-lang/rust/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Rust</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/rust/pull/158303">Always escape grapheme extenders in <code>str::escape_debug</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/156160">feat: add symmetric PartialEq impls for Vec, &amp;[T], &amp;mut [T] versus Cow&lt;'_, [T]&gt;</a></li> <li><a href="https://github.com/rust-lang/rust/pull/160534">stabilize smart pointer map functions</a></li> <li><a href="https://github.com/rust-lang/rust/pull/160108">Stabilize <code>windows_process_extensions_main_thread_handle</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/160136">Add <code>Default</code> implementation for <code>std::sync::Once</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/160302">target_features: sse (or at least avx2) is incompatible with soft-float ABI</a></li> <li><a href="https://github.com/rust-lang/rust/pull/160705">Remove <code>From&lt;!&gt; for T</code> <em>reservation</em> impl</a></li> <li><a href="https://github.com/rust-lang/rust/pull/160436">stabilize <code>Box::take</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/160229">Extend <code>dropping_{references,copy_types}</code> lints to <code>drop_in_place</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/159986">lint on more incorrect usages of <code>core::ffi::c_void</code></a></li> <li><a href="https://github.com/rust-lang/rust/pull/158515">Make let-else respect macro_rules expr metavariable grouping</a></li> </ul> <h5 id="cargo_2"><a class="toclink" href="#cargo_2"><a href="https://github.com/rust-lang/cargo/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Cargo</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/cargo/pull/17335">feat(resolver): Stabilize min-publish-age</a></li> <li><a href="https://github.com/rust-lang/cargo/pull/17298">feat(diag): Stabilize cargo-lints </a></li> </ul> <h5 id="compiler-team-mcps-only"><a class="toclink" href="#compiler-team-mcps-only"><a href="https://github.com/rust-lang/compiler-team/issues?q=label%3Amajor-change%20label%3Afinal-comment-period%20state%3Aopen">Compiler Team</a> <a href="https://forge.rust-lang.org/compiler/mcp.html">(MCPs only)</a></a></h5> <ul> <li><a href="https://github.com/rust-lang/compiler-team/issues/1028">Expose <code>target_abi = "v8plus"</code> on sparc-unknown-linux-gnu</a></li> </ul> <p><em>No Items entered Final Comment Period this week for <a href="https://github.com/rust-lang/rfcs/issues?q=state%3Aopen%20label%3Afinal-comment-period%20state%3Aopen">Rust RFCs</a>, <a href="https://github.com/rust-lang/lang-team/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Language Team</a>, <a href="https://github.com/rust-lang/reference/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Language Reference</a>, <a href="https://github.com/rust-lang/leadership-council/issues?q=state%3Aopen%20label%3Afinal-comment-period%20state%3Aopen">Leadership Council</a> or <a href="https://github.com/rust-lang/unsafe-code-guidelines/issues?q=is%3Aopen%20label%3Afinal-comment-period%20sort%3Aupdated-desc%20state%3Aopen">Unsafe Code Guidelines</a>.</em> Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.</p> <h3 id="new-and-updated-rfcs"><a class="toclink" href="#new-and-updated-rfcs"><a href="https://github.com/rust-lang/rfcs/pulls">New and Updated RFCs</a></a></h3> <ul> <li><a href="https://github.com/rust-lang/rfcs/pull/3999">Change <code>i686-pc-windows-msvc</code> from Tier 1 with host tools =&gt; Tier 1 without host tools</a></li> <li><a href="https://github.com/rust-lang/rfcs/pull/4000">Owning references (<code>&amp;own T</code>)</a></li> </ul> <!-- Call for Testing Message (post in GH `issue` and remove `call-for-testing` label) --> <p>This RFC will appear in the <strong>Call for Testing</strong> section of the next issue (#) of This Week in Rust (TWiR). You may remove the <code>call-for-testing</code> label. Please feel free to leave the <code>call-for-testing</code> label in place if you would like this RFC to appear again in another issue of TWiR.</p> <h2 id="upcoming-events"><a class="toclink" href="#upcoming-events">Upcoming Events</a></h2> <p>Rusty Events between 2026-08-19 - 2026-09-16 🦀</p> <h3 id="virtual"><a class="toclink" href="#virtual">Virtual</a></h3> <ul> <li>2026-08-19 | Hybrid (Vancouver, CA) | <a href="https://www.meetup.com/vancouver-rust">Vancouver Rust</a><ul> <li><a href="https://www.meetup.com/vancouver-rust/events/314105333/"><strong>Dealing with Dependencies</strong></a></li> </ul> </li> <li>2026-08-20 | Hybrid (Seattle, WA, US) | <a href="https://www.meetup.com/join-srug">Seattle Rust User Group</a><ul> <li><a href="https://www.meetup.com/seattle-rust-user-group/events/314520814/"><strong>August, 2026 SRUG (Seattle Rust User Group) Meetup</strong></a></li> </ul> </li> <li>2026-08-20 | Virtual (Charlottesville, VA, US) | <a href="https://www.meetup.com/charlottesville-rust-meetup">Charlottesville Rust Meetup</a><ul> <li><a href="https://www.meetup.com/charlottesville-rust-meetup/events/315733791/"><strong>Tock OS Part #5 — Wireless Communication with the IEEE 802.15.4 protocol</strong></a></li> </ul> </li> <li>2026-08-21 | Virtual | <a href="https://luma.com/rust-girona">Rust Girona</a><ul> <li><a href="https://luma.com/1bm27cah"><strong>Sessió setmanal de codificació / Weekly coding session</strong></a></li> </ul> </li> <li>2026-08-25 | Virtual (Dallas, TX, US) | <a href="https://www.meetup.com/dallasrust">Dallas Rust User Meetup</a><ul> <li><a href="https://www.meetup.com/dallasrust/events/310254775/"><strong>Fourth Tuesday</strong></a></li> </ul> </li> <li>2026-08-26 | Virtual (Cardiff, UK) | <a href="https://www.meetup.com/rust-and-c-plus-plus-in-cardiff">Rust and C++ Cardiff</a><ul> <li><a href="https://www.meetup.com/rust-and-c-plus-plus-in-cardiff/events/316083375/"><strong>Operating Systems Book Club: Lottery and Multi-CPU Scheduling</strong></a></li> </ul> </li> <li>2026-08-27 | Virtual (Berlin, DE) | <a href="https://www.meetup.com/rust-berlin">Rust Berlin</a><ul> <li><a href="https://www.meetup.com/rust-berlin/events/313345334/"><strong>Rust Hack and Learn</strong></a></li> </ul> </li> <li>2026-08-28 | Virtual | <a href="https://luma.com/rust-girona">Rust Girona</a><ul> <li><a href="https://luma.com/arkkrcj5"><strong>Sessió setmanal de codificació / Weekly coding session</strong></a></li> </ul> </li> <li>2026-08-31 | Virtual | <a href="https://luma.com/rust-maven">Rust 🦀 Maven</a><ul> <li><a href="https://luma.com/nwfmsdtf"><strong>Workshop: Add tests to an open source Rust project</strong></a></li> </ul> </li> <li>2026-09-01 | Virtual | <a href="https://luma.com/rust-maven">Rust 🦀 Maven</a><ul> <li><a href="https://luma.com/d9w26vav"><strong>Tauri: Cross-Platform desktop applications with Rust and web technologies</strong></a></li> </ul> </li> <li>2026-09-02 | Virtual (Indianapolis, IN, US) | <a href="https://www.meetup.com/indyrs/events/">Indy Rust</a><ul> <li><a href="https://www.meetup.com/indyrs/events/wqzhftyjcmbdb/"><strong>Indy.rs - with Social Distancing</strong></a></li> </ul> </li> <li>2026-09-02 | Virtual (Indianapolis, IN, US) | <a href="https://www.meetup.com/indyrs">Indy Rust</a><ul> <li><a href="https://www.meetup.com/indyrs/events/316107210/"><strong>Indy.rs - with Social Distancing</strong></a></li> </ul> </li> <li>2026-09-04 | Virtual | <a href="https://luma.com/rust-girona">Rust Girona</a><ul> <li><a href="https://luma.com/sqf4ux01"><strong>Sessió setmanal de codificació / Weekly coding session</strong></a></li> </ul> </li> <li>2026-09-06 | Virtual (Dallas, TX, US) | <a href="https://www.meetup.com/dallasrust">Dallas Rust User Meetup</a><ul> <li><a href="https://www.meetup.com/dallasrust/events/316133872/"><strong>Rust Deep Learning: First Sunday</strong></a></li> </ul> </li> <li>2026-09-08 - 2026-09-11 | Hybrid (Montreal, CA) | <a href="https://rustconf.com/">RustConf 2026</a><ul> <li><a href="https://rustconf.com/"><strong>RustConf 2026</strong></a></li> </ul> </li> <li>2026-09-08 | Virtual (Dallas, TX, US) | <a href="https://www.meetup.com/dallasrust">Dallas Rust User Meetup</a><ul> <li><a href="https://www.meetup.com/dallasrust/events/310254774/"><strong>Second Tuesday</strong></a></li> </ul> </li> <li>2026-09-08 | Virtual (London, UK) | <a href="https://www.meetup.com/women-in-rust">Women in Rust</a><ul> <li><a href="https://www.meetup.com/women-in-rust/events/315859305/"><strong>👋 Community Catch Up</strong></a></li> </ul> </li> <li>2026-09-10 | Virtual | <a href="https://luma.com/rust-maven">Rust 🦀 Maven</a><ul> <li><a href="https://luma.com/rfbzk3ae"><strong>Solving Real-World Planning Problems in Rust with SolverForge</strong></a></li> </ul> </li> <li>2026-09-10 | Virtual (Berlin, DE) | <a href="https://www.meetup.com/rust-berlin">Rust Berlin</a><ul> <li><a href="https://www.meetup.com/rust-berlin/events/315691423/"><strong>Rust Hack and Learn</strong></a></li> </ul> </li> <li>2026-09-10 | Virtual (Nürnberg, DE) | <a href="https://www.meetup.com/rust-noris">Rust Nuremberg</a><ul> <li><a href="https://www.meetup.com/rust-noris/events/315619611/"><strong>Rust Nürnberg online</strong></a></li> </ul> </li> <li>2026-09-15 | Virtual (Washington, DC, US) | <a href="https://www.meetup.com/rustdc">Rust DC</a><ul> <li><a href="https://www.meetup.com/rustdc/events/fhvsztyjcmbtb/"><strong>Mid-month Rustful</strong></a></li> </ul> </li> <li>2026-09-16 | Hybrid (Vancouver, CA) | <a href="https://www.meetup.com/vancouver-rust">Vancouver Rust</a><ul> <li><a href="https://www.meetup.com/vancouver-rust/events/314233757/"><strong>Rust Study/Hack/Hang-out</strong></a></li> </ul> </li> </ul> <h3 id="africa"><a class="toclink" href="#africa">Africa</a></h3> <ul> <li>2026-09-08 | Johannesburg, ZA | <a href="https://www.meetup.com/johannesburg-rust-meetup">Johannesburg Rust Meetup</a><ul> <li><a href="https://www.meetup.com/johannesburg-rust-meetup/events/315750593/"><strong>Rust's extended standard library</strong></a></li> </ul> </li> </ul> <h3 id="asia"><a class="toclink" href="#asia">Asia</a></h3> <ul> <li>2026-08-22 | Bangalore, IN | <a href="https://hasgeek.com/rustbangalore">Rust Bangalore</a><ul> <li><a href="https://hasgeek.com/rustbangalore/august-2026-rustacean-meetup/"><strong>August 2026 Rustacean Meetup</strong></a></li> </ul> </li> <li>2026-08-22 | Delhi, IN | <a href="https://www.meetup.com/rustdelhi">Rust Delhi</a><ul> <li><a href="https://www.meetup.com/rustdelhi/events/315185336/"><strong>Rust Delhi X SciPy India Meetup</strong></a></li> </ul> </li> <li>2026-08-22 | Noida, IN | <a href="https://scipy.in/">SciPy India</a><ul> <li><a href="https://scipy.in/sci-py-rs/"><strong>Scientific Computing in Rust and Python</strong></a></li> </ul> </li> <li>2026-08-29 | Pune, IN | <a href="https://hasgeek.com/rustpune/">Rust Pune</a><ul> <li><a href="https://hasgeek.com/rustpune/meetup-august-2026/"><strong>Rust Pune Meetup: August 2026</strong></a></li> </ul> </li> </ul> <h3 id="europe"><a class="toclink" href="#europe">Europe</a></h3> <ul> <li>2026-08-20 | Berlin, DE | <a href="https://www.meetup.com/rust-berlin">Rust Berlin</a><ul> <li><a href="https://www.meetup.com/rust-berlin/events/316151073/"><strong>Rust Summer Party!</strong></a></li> </ul> </li> <li>2026-08-20 | Frankfurt, DE | <a href="https://www.meetup.com/rust-rhein-main">Rust Rhein-Main</a><ul> <li><a href="https://www.meetup.com/rust-rhein-main/events/315855368/"><strong>Building an acoustic camera with egui and embassy</strong></a></li> </ul> </li> <li>2026-08-21 | Edinburgh, UK | <a href="https://www.meetup.com/rust-edi">Rust and Friends</a><ul> <li><a href="https://www.meetup.com/rust-and-friends/events/316115136/"><strong>Rust and Friends (daytime coffee)</strong></a></li> </ul> </li> <li>2026-08-26 | Dresden, DE | <a href="https://github.com/rust-dresden">Rust Dresden</a><ul> <li><a href="https://pretix.eu/rust-dresden/on-location-3"><strong>Third Meetup</strong></a></li> </ul> </li> <li>2026-08-27 | Manchester, UK | <a href="https://www.meetup.com/rust-manchester">Rust Manchester</a><ul> <li><a href="https://www.meetup.com/rust-manchester/events/315891530/"><strong>Rust Manchester August Talks</strong></a></li> </ul> </li> <li>2026-08-29 | Stockholm, SE | <a href="https://www.meetup.com/stockholm-rust">Stockholm Rust</a><ul> <li><a href="https://www.meetup.com/stockholm-rust/events/316130996/"><strong>Ferris' Fika Forum #29</strong></a></li> </ul> </li> <li>2026-09-08 | Paris, FR | <a href="https://www.meetup.com/rust-paris">Rust Paris</a><ul> <li><a href="https://www.meetup.com/rust-paris/events/316169040/"><strong>Rust meetup #87</strong></a></li> </ul> </li> <li>2026-09-14 - 2026-09-16 | Berlin, DE | <a href="https://oxidizeconf.com/">Oxidize 2026</a><ul> <li><a href="https://oxidizeconf.com/"><strong>Oxidize 2026</strong></a></li> </ul> </li> <li>2026-09-15 | Leipzig, DE | <a href="https://www.meetup.com/rust-modern-systems-programming-in-leipzig">Rust - Modern Systems Programming in Leipzig</a><ul> <li><a href="https://www.meetup.com/rust-modern-systems-programming-in-leipzig/events/313816477/"><strong>Reproducing scientific papers - with Rust &amp; "AI"</strong></a></li> </ul> </li> </ul> <h3 id="north-america"><a class="toclink" href="#north-america">North America</a></h3> <ul> <li>2026-08-19 | Hybrid (Vancouver, CA) | <a href="https://www.meetup.com/vancouver-rust">Vancouver Rust</a><ul> <li><a href="https://www.meetup.com/vancouver-rust/events/314105333/"><strong>Dealing with Dependencies</strong></a></li> </ul> </li> <li>2026-08-19 | San Francisco, CA, US | <a href="https://luma.com/bayarearust">Bay Area Rust</a><ul> <li><a href="https://luma.com/00f2s7q9"><strong>Bay Area Rust August Meetup</strong></a></li> </ul> </li> <li>2026-08-20 | Hybrid (Seattle, WA, US) | <a href="https://www.meetup.com/join-srug">Seattle Rust User Group</a><ul> <li><a href="https://www.meetup.com/seattle-rust-user-group/events/314520814/"><strong>August, 2026 SRUG (Seattle Rust User Group) Meetup</strong></a></li> </ul> </li> <li>2026-08-20 | Mountain View, CA, US | <a href="https://www.meetup.com/hackerdojo">Hacker Dojo</a><ul> <li><a href="https://www.meetup.com/hackerdojo/events/315929355/"><strong>RUST MEETUP at HACKER DOJO</strong></a></li> </ul> </li> <li>2026-08-20 | New York, NY, US | <a href="https://www.meetup.com/rust-nyc">Rust NYC</a><ul> <li><a href="https://www.meetup.com/rust-nyc/events/316056830/"><strong>Rust NYC: 'Data Shapes Your Memory' and 'Rust in Peace'</strong></a></li> </ul> </li> <li>2026-08-26 | Austin, TX, US | <a href="https://www.meetup.com/rust-atx">Rust ATX</a><ul> <li><a href="https://www.meetup.com/rust-atx/events/315171660/"><strong>Rust Lunch - Fareground</strong></a></li> </ul> </li> <li>2026-08-26 | Los Angeles, CA, US | <a href="https://www.meetup.com/rust-los-angeles">Rust Los Angeles</a><ul> <li><a href="https://www.meetup.com/rust-los-angeles/events/315963062/"><strong>Rust LA August! Rust in Quantum Computing</strong></a></li> </ul> </li> <li>2026-08-27 | Atlanta, GA, US | <a href="https://www.meetup.com/rust-atl">Rust Atlanta</a><ul> <li><a href="https://www.meetup.com/rust-atl/events/313539331/"><strong>Rust-Atl</strong></a></li> </ul> </li> <li>2026-09-03 | Mountain View, CA, US | <a href="https://www.meetup.com/hackerdojo">Hacker Dojo</a><ul> <li><a href="https://www.meetup.com/hackerdojo/events/316124372/"><strong>RUST MEETUP at HACKER DOJO</strong></a></li> </ul> </li> <li>2026-09-03 | Saint Louis, MO, US | <a href="https://www.meetup.com/stl-rust">STL Rust</a><ul> <li><a href="https://www.meetup.com/stl-rust/events/315603673/"><strong>Cryptography + Quantum Computers</strong></a></li> </ul> </li> <li>2026-09-08 - 2026-09-11 | Hybrid (Montreal, CA) | <a href="https://rustconf.com/">RustConf</a><ul> <li><a href="https://rustconf.com/"><strong>RustConf</strong></a></li> </ul> </li> <li>2026-09-08 | Montreal, QC, CA | <a href="https://rustfoundation.org/">Rust Foundation</a><ul> <li><a href="https://rustfoundation.org/event/rust-teams-health-summit/"><strong>Rust Teams Health Summit</strong></a></li> </ul> </li> <li>2026-09-08 - 2026-09-11 | Montreal, QC, CA | <a href="https://rustconf.com/">RustConf 2026</a><ul> <li><a href="https://rustconf.com/schedule/"><strong>RustConf 2026, Hosted by the Rust Foundation</strong></a></li> </ul> </li> <li>2026-09-09 | Montreal, CA | <a href="https://www.meetup.com/women-in-rust">Women in Rust</a><ul> <li><a href="https://www.meetup.com/women-in-rust/events/315773005/"><strong>RustConf Coffee Break Meetup</strong></a></li> </ul> </li> <li>2026-09-10 | San Diego, CA, US | <a href="https://www.meetup.com/san-diego-rust">San Diego Rust</a><ul> <li><a href="https://www.meetup.com/san-diego-rust/events/315601104/"><strong>San Diego Rust September Meetup - Back in person!</strong></a></li> </ul> </li> <li>2026-09-15 | San Francisco, CA, US | <a href="https://www.meetup.com/san-francisco-rust-study-group">San Francisco Rust Study Group</a><ul> <li><a href="https://www.meetup.com/san-francisco-rust-study-group/events/314997217/"><strong>Rust Hacking in Person</strong></a></li> </ul> </li> <li>2026-09-16 | Hybrid (Vancouver, CA) | <a href="https://www.meetup.com/vancouver-rust">Vancouver Rust</a><ul> <li><a href="https://www.meetup.com/vancouver-rust/events/314233757/"><strong>Rust Study/Hack/Hang-out</strong></a></li> </ul> </li> </ul> <h3 id="oceania"><a class="toclink" href="#oceania">Oceania</a></h3> <ul> <li>2026-08-27 | Melbourne, AU | <a href="https://www.meetup.com/rust-melbourne">Rust Melbourne</a><ul> <li><a href="https://www.meetup.com/rust-melbourne/events/315039490/"><strong>Rust Melbourne August 2026</strong></a></li> </ul> </li> <li>2026-08-27 | Melbourne, AU | <a href="https://luma.com/rustmelbourne">Rust Melbourne</a><ul> <li><a href="https://luma.com/d0rndgyv"><strong>Rust Melbourne Meetup</strong></a></li> </ul> </li> </ul> <p>If you are running a Rust event please add it to the <a href="https://www.google.com/calendar/embed?src=apd9vmbc22egenmtu5l6c5jbfc%40group.calendar.google.com">calendar</a> to get it mentioned here. Please remember to add a link to the event too. Email the <a href="mailto:community-team@rust-lang.org">Rust Community Team</a> for access.</p> <h2 id="jobs"><a class="toclink" href="#jobs">Jobs</a></h2> <p>Please see the latest <a href="https://www.reddit.com/r/rust/comments/1ttbtf5/official_rrust_whos_hiring_thread_for_jobseekers/">Who's Hiring thread on r/rust</a></p> <h1 id="quote-of-the-week"><a class="toclink" href="#quote-of-the-week">Quote of the Week</a></h1> <blockquote> <p>ass-bind is peak</p> </blockquote> <p>– <a href="https://rust-lang.zulipchat.com/#narrow/channel/326132-t-types.2Fmeetings/topic/2026-08-11/near/615874481">Clar Fon on rust-zulip discussion "assumptions on binders" abbreviations</a></p> <p>Thanks to <a href="https://users.rust-lang.org/t/twir-quote-of-the-week/328/1790">Theemathas</a> for the suggestion!</p> <p><a href="https://users.rust-lang.org/t/twir-quote-of-the-week/328">Please submit quotes and vote for next week!</a></p> <p>This Week in Rust is edited by:</p> <ul> <li><a href="https://github.com/nellshamrell">nellshamrell</a></li> <li><a href="https://github.com/llogiq">llogiq</a></li> <li><a href="https://github.com/ericseppanen">ericseppanen</a></li> <li><a href="https://github.com/extrawurst">extrawurst</a></li> <li><a href="https://github.com/U007D">U007D</a></li> <li><a href="https://github.com/mariannegoldin">mariannegoldin</a></li> <li><a href="https://github.com/bdillo">bdillo</a></li> <li><a href="https://github.com/opeolluwa">opeolluwa</a></li> <li><a href="https://github.com/bnchi">bnchi</a></li> <li><a href="https://github.com/KannanPalani57">KannanPalani57</a></li> <li><a href="https://github.com/tzilist">tzilist</a></li> </ul> <p><em>Email list hosting is sponsored by <a href="https://foundation.rust-lang.org/">The Rust Foundation</a></em></p> <p><small><a href="https://www.reddit.com/r/rust/comments/1vt8nni/this_week_in_rust_665/">Discuss on r/rust</a></small></p>