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 on X (formerly Twitter) 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.

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Updates from Rust Community

Official

• February 2025 Project Director Update
• Announcing Rust 1.85.0 and Rust 2024

Project/Tooling Updates

• 🦀 Automating Rust Dependency Management - A Deep Dive into cargo-autodd
• zlib-rs is faster than C
• This month in Servo: new webview API, relative colors, canvas buffs, and more!
• esp-hal 1.0.0 beta announcement
• Nyx Space and Rust Power Firefly's Blue Ghost Lunar Landing

Observations/Thoughts

• View types redux and abstract fields
• Rust edition 2024 annotated
• A Rustacean's Guide to Embedded World 2025
• Demystifying monads in Rust through property-based testing
• Tokio + prctl = nasty bug
• How Rust & Embassy Shine on Embedded Devices (Part 2): Insights for Everyone and Nine Rules for Embedded Programmers
• A length-indexed Vector in Rust - Part 2

Rust Walkthroughs

• Epoch Adventures: Breaking Free from ABA in Concurrent Rust
• Using pgVector with SeaORM in Rust

Miscellaneous

• All RustWeek 2025 Speakers Announced

Crate of the Week

This week's crate is hiqlite, a database project combining SQLite with OpenRaft to enable high-availability applications with embedded database.

Thanks to Audun Halland for the 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, Rust language RFCs or Rustup.

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.

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

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.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

506 pull requests were merged in the last week

Compiler

• create a generic AVR target: avr-none
• new attribute parsing infrastructure
• more sophisticated span trimming for suggestions

Library

• stabilise os_str_display, (const_)ptr_sub_ptr, const_slice_flatten, file_lock, inherent_str_constructors, num_midpoint_signed, unbounded_shifts, unsigned_is_multiple_of, (and const-stabilize) integer_sign_cast,
• simplify slice::Iter::next enough that it inlines
• reduce Box::default stack copies in debug mode
• impl TryFrom<Vec<u8>> for String
• implement read_buf for WASI stdin
• implement feature isolate_most_least_significant_one for integer types
• libcore/net: IpAddr::as_octets()
• added into_value function to ControlFlow<T, T>
• windows: use existing wrappers in File::open_native

Rustdoc

• librustdoc: use pulldown-cmark-escape for HTML escaping

Clippy

• new lints: io_other_error, owned_cow
• .last() to .next_back() requires a mutable receiver
• manual_slice_fill: do not initialize from the iterator
• useless_asref: add a check for Clone before suggesting the use of .clone()
• fix map_entry FP on struct member
• fix too_long_first_doc_paragraph suggesting wrongly when first line too long
• add todo! & unimplemented! to format macros list
• extend obfuscated_if_else to support {then(), then_some()}.unwrap_or_else()

Rust-Analyzer

• rust-analyzer: feat: calculate drop glue and show it on hover
• rust-analyzer: ignore assists with many results if grouping not supported
• rust-analyzer: include private items in completions for local crates
• rust-analyzer: use correct working directory for non-workspace proc-macro execution

Rust Compiler Performance Triage

Fairly quiet week with the exception of an improvement to the very often used Iter::next function which can now be inlined leading to a myriad of performance improvements.

Triage done by @rylev. Revision range: ce36a966..f5729cfe

Summary:

1 Regression, 1 Improvement, 7 Mixed; 2 of them in rollups 40 artifact comparisons made in total

Full report here.

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

• RFC: project goals for 2025h1

Tracking Issues & PRs

Rust

• Make ptr_cast_add_auto_to_object lint into hard error
• Tracking Issue for const_copy_from_slice
• Tracking Issue for const_char_classify
• Allow *const W<dyn A> -> *const dyn A ptr cast
• Fix parsing of ranges after unary operators
• Tracking issue for slice_take
• Tracking Issue for box_uninit_write

Other Areas

• No Items entered Final Comment Period this week for Rust RFCs, Cargo, Language Team, Language Reference or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

• RFC: Add additional inline intents
• RFC: Add "spaceship" operator.
• Guarantee slice representation

Upcoming Events

Rusty Events between 2025-02-26 - 2025-03-26 🦀

Virtual

• 2025-02-27 | Virtual (US) | Ardan Labs
  • Intro to Rust
• 2025-02-27 | Virtual (Berlin, DE) | Rust Berlin
  • Rust Hack and Learn
• 2025-02-27 | Virtual (Charlottesville, VA, US) | Charlottesville Rust Meetup
  • Parsing command line options with category theory and async
• 2025-03-01 | Virtual (Kampala, UG) | Rust Circle Kampala
  • Rust Circle Meetup
• 2025-03-04 | Virtual (Tel Aviv-Yafo, IL) | Code Mavens 🦀 - 🐍 - 🐪
  • Building Integration Libraries and parsing with Winnow in Rust with Kenny Flegal
• 2025-03-05 | Virtual (Indianapolis, IN, US) | Indy Rust
  • Indy.rs - with Social Distancing
• 2025-03-06 | Virtual (Nürnberg, DE) | Rust Nurnberg DE
  • Rust Nürnberg online
• 2025-03-06 | Virtual (Rotterdam, NL) | Bevy Game Development
  • Bevy Meetup #9
• 2025-03-06 | Virtual (Tel Aviv-Yafo, IL) | Code Mavens 🦀 - 🐍 - 🐪
  • Ratatui - Terminal User Interfaces in Rust with Orhun Parmaksız
• 2025-03-09 | Virtual (Tel Aviv-Yafo, IL) | Code Mavens 🦀 - 🐍 - 🐪
  • Creating A Mock Blockchain in Rust with Sourav Mishra
• 2025-03-09 | Virtual (Tel Aviv-Yafo, IL) | Rust 🦀 TLV
  • Becoming a Rust Champion: Leading Your Team to Success with Yoni Peleg
• 2025-03-11 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
  • Second Tuesday
• 2025-03-11 | Virtual (London, UK) | Women in Rust
  • 👋 Community Catch Up
• 2025-03-13 | Virtual (Berlin, DE) | Rust Berlin
  • Rust Hack and Learn
• 2025-03-18 | Virtual (Washington, DC, US) | Rust DC
  • Mid-month Rustful
• 2025-03-18 | Virtual (Tel Aviv-Yafo, IL) | Code Mavens 🦀 - 🐍 - 🐪
  • crum: Complex Numbers and Complex Matrices in Rust with Frans Slabber
• 2025-03-19 | Virtual (Vancouver, BC, CA) | Vancouver Rust
  • Bacon & Performance Benchmarking
• 2025-03-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
  • Fourth Tuesday
• 2025-03-25 | Virtual (London, UK) | Women in Rust
  • Lunch & Learn: SKIing into Rust - crafting a simple interpreter

Asia

• 2025-03-01 | Bangalore/Bengaluru, IN | Rust Bangalore
  • Zig & Rust Meetup
• 2025-03-19 | Tel Aviv-Yafo, IL | Rust 🦀 TLV
  • In person Rust March 2025 at Jit in Tel Aviv

Europe

• 2025-02-26 | Darmstadt, DE | Rust Rhein Main
  • Rust Compiler Tuning
• 2025-02-26 | Girona, ES | Rust Girona
  • Rust Girona Hack & Learn 03 2025
• 2025-02-26 | Vienna, AT | Rust Vienna
  • Rust Vienna - February | at metalab 🦀
• 2025-02-27 | Copenhagen, DK | Copenhagen Rust Community
  • Rust meetup #55 sponsored by Veo
• 2025-02-27 | Oslo, NO | Rust Oslo
  • Rust Hack'n'Learn at Kampen Bistro
• 2025-02-27 | Paris, FR | Rust Paris
  • Rust meetup #75
• 2025-02-28 | London, UK | London Rust Project Group
  • Rust Web Workshop
• 2025-03-01 | Nürnberg, DE | Rust Nuremberg
  • Technikmuseum Speyer
• 2025-03-05 | Barcelona, ES | BcnRust
  • 17th BcnRust Meetup
• 2025-03-07 | Prague, CZ | Rust Czech Republic
  • Rust meetup in Braiins offices
• 2025-03-12 | Reading, UK | Reading Rust Workshop
  • Reading Rust Meetup
• 2025-03-13 | Biel, CH | Rust Bern
  • 2025 Rust Talks Bern #2 @ BFH Biel
• 2025-03-14 | Paris, FR | Rust in Paris
  • Rust in Paris 2025
• 2025-03-18 | Basel, CH | Rust Basel
  • Rust Meetup #10 @ MDPI Basel
• 2025-03-18 | Leipzig, DE | Rust - Modern Systems Programming in Leipzig
  • Topic TBD

North America

• 2025-02-26 | Austin, TX, US | Rust ATX
  • Rust Lunch - Fareground
• 2025-02-27 | Atlanta, GA, US | Rust Atlanta
  • Starting the meetup again
• 2025-02-27 | Portland, OR, US | PDXRust
  • Spidering Wikipedia Politely In Async Rust
• 2025-03-02 | Boston, MA, US | Boston Rust Meetup
  • Beacon Hill Rust Lunch, Mar 2
• 2025-03-06 | Saint Louis, MO, US | STL Rust
  • CRDTs in Rust
• 2025-03-10 | Boston, MA, US | Boston Rust Meetup
  • Davis Square Rust Lunch, Mar 10
• 2025-03-18 | San Francisco, CA, US | San Francisco Rust Study Group
  • Rust Hacking in Person
• 2025-03-18 | Spokane, WA, US | Spokane Rust
  • Monthly Meetup: Topic TBD!
• 2025-03-20 | Redmond, WA, US | Seattle Rust User Group
  • March, 2025 SRUG (Seattle Rust User Group) Meetup
• 2025-03-26 | Austin, TX, US | Rust ATX
  • Rust Lunch - Fareground

Oceania

• 2025-02-27 | Auckland, NZ | Rust AKL
  • Rust:7 Years Maintaining a Commercial Unicode Tool + Peace: Automation Framework
• 2025-03-04 | Perth, WA, AU | Rust Perth Meetup Group
  • How Orica is using Rust in their workplace
• 2025-03-11 | Christchurch, NZ | Christchurch Rust Meetup Group
  • Christchurch Rust Meetup

South America:

• 2025-03-15 | São Paulo, BR | Rust São Paulo Meetup
  • Encontro do Rust-SP na CloudWalk

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who's Hiring thread on r/rust

Quote of the Week

Rust isn't a "silver bullet" that will solve all of our problems, but it sure will help in a huge number of places, so for new stuff going forward, why wouldn't we want that?

– Greg Kroah-Hartmann on the Linux Kernel Mailing List

Thanks to Krishna Sundarram for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

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Discuss on r/rust