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This Week in Rust 671

Hello and welcome to another issue of This Week in Rust! Rust 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 @thisweekinrust.bsky.social on Bluesky or @ThisWeekinRust on mastodon.social, or send us a pull request. Want to get involved? We love contributions. This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week's issue, please submit a PR. Want TWIR in your inbox? Subscribe here. Updates from Rust Community Newsletters Scientific Computing in Rust #22 (September 2026) The Embedded Rustacean Issue #81 Observations/Thoughts Can safe Rust ever beat Google's C Brotli? Building a DMA based driver for the RP2350 I2C (safety not included) Advanced soft-bodies for games with the Rapier physics engine Supporting native Rust in Workers with the new Emscripten target for wasm-bindgen Rusty thoughts on "Parse, don't validate" The state of SIMD in Rust in 2026 How do you stop being a Rust novice? We Have Named Arguments at Home: a reply to the blog post Arguing about arguments mentioned in the last issue Upstream Rust maintenance report (August-September 2026) Rust in the kernel? What about Rust without the kernel! Compiling the kernel with gccrs Listening to the radio with Rust Native support for Rust on the GPU Rust Walkthroughs How to speed up the Rust compiler in September 2026 Building Real-Time Notifications with SSE and Pub/Sub Green Threads from Scratch A Type Stronger than the Sum of its Components Deser: Rethinking Rust Serialization Dropping Swift from our Bevy iOS crates Pining for Arc Downcasting in Rust Topcoat is pushing the boundary of server applications with Rust Rust Reborrowing, Aliasing, and Mutable References A very condensed introduction of the basics of Rust [video] Making Our GPUI App Interactive with State and Events [ES] Domain–Flow–Effects (DFE): an architecture designed for Rust Miscellaneous [DE]Rust & Linux Community Event – November 20–21, 2026 @ TUXEDO, Augsburg – Help us choose the workshop topic Crate of the Week This week's crate is ying-profiler, a native Rust sampling memory profiler. Thanks to Evan Chan for the self-suggestion! Please submit your suggestions and votes for next week! Calls for Testing An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization. If you are a feature implementer and would like your RFC to appear in this list, add a call-for-testing label to your RFC along with a comment providing testing instructions and/or guidance on which aspect(s) of the feature need testing. No calls for testing were issued this week by Rust, Cargo, Rustup or Rust language RFCs. Let us know if you would like your feature to be tracked as a part of this list. Call for Participation; projects and speakers CFP - Projects 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! Some of these tasks may also have mentors available, visit the task page for more information. unsynced - strace frontend fails on pwritev2 with offset -1 (current file offset) unsynced - Model hard links (link/linkat) instead of warning unsynced - Add an ext4 data=writeback persistence profile MemoryWhale - Cover friendly errors for incomplete mw arguments MemoryWhale - Lock down mw --help output dataprof - Remote Parquet refusal messages should say to download the file when the server ignores Range dataprof - ScoreBounds::dimension_scores docs still list estimated key counts as unbounded dataprof - The progress finished event under-counts rows when a row cap stops the incremental engine If you are a Rust project owner and are looking for contributors, please submit tasks here or through

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