thunderbird

Bugs resolved in Moz-Phab 2.12.0:

bug 2029015 Clean up previous_commit state tracking
bug 2029072 Using moz-phab uplift --assessment-id shouldn't require extra browser clicks

Discuss these changes in #engineering-workflow on Slack or #Conduit Matrix.

1 post - 1 participant

08 Apr 2026 6:04pm GMT

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.

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Updates from Rust Community

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This Month in Rust OSDev: March 2026

Project/Tooling Updates

Observations/Thoughts

Rust Walkthroughs

Miscellaneous

[video] Rust/C++ Interop Challenges - Victor Ciura - CppCon 2025

Crate of the Week

This week's crate is aimdb-core, a type-safe and platform-agnostic data pipeline where the Rust type system is the schema and trait implementations define its behavior.

Thanks to sounds.like.lx 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.

Wild Almonds - Shared Audio Player library for flutter and Tauri

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 Bluesky 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.

NDC Techtown | CFP open until 2026-04-14 | Kongsberg, Norway | 2026-09-09 - 2026-09-12.
EuroRust | CFP open until 2026-04-27 | Barcelona, Spain | 2026-10-14 - 2026-10-17

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 Bluesky or Mastodon!

Updates from the Rust Project

479 pull requests were merged in the last week

Compiler

Library

Cargo

Clippy

Rust-Analyzer

Rust Compiler Performance Triage

A shorter week than normal (probably due to later perf triage last week). Overall fairly small changes scattered across various PRs, though the net effect was slightly positive (-0.5% avg change). All changed ended up either mixed or improvements this week.

Triage done by @simulacrum. Revision range: cf7da0b7..e73c56ab

0 Regressions, 3 Improvements, 8 Mixed; 5 of them in rollups 26 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:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Cargo

No Cargo Tracking Issues or PRs entered Final Comment Period this week.

Compiler Team (MCPs only)

cargo clean: Add target directory validation

No Items entered Final Comment Period this week for Rust RFCs, Language Reference, Language Team, Leadership Council 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.

2026-04-09 | Virtual (Berlin, DE) | Rust Berlin
- Rust Hack and Learn
2026-04-14 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Second Tuesday
2026-04-14 | Virtual (London, UK) | Women in Rust
- 👋 Community Catch Up
2026-04-14 | Virtual (Tel Aviv-yafo, IL) | Code Mavens 🦀 - 🐍 - 🐪
- Web development using axum in Rust - part 3
2026-04-15 | Hybrid (Vancouver, BC, CA) | Vancouver Rust
- Nushell
2026-04-15 | Virtual (Girona, ES) | Rust Girona
- Weekly coding session
2026-04-16 | Hybrid (Seattle, WA, US) | Seattle Rust User Group
- April, 2026 SRUG (Seattle Rust User Group) Meetup
2026-04-19 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Rust Deep Learning: Third Sunday
2026-04-21 | Virtual (Washington, DC, US) | Rust DC
- Mid-month Rustful
2026-04-22 | Virtual (Girona, ES) | Rust Girona
- Weekly coding session
2026-04-23 | Virtual (Amsterdam, NL) | Bevy Game Development
- Bevy Meetup #13
2026-04-23 | Virtual (Berlin, DE) | Rust Berlin
- Rust Hack and Learn
2026-04-28 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Fourth Tuesday
2026-04-28 | Virtual (London, UK) | Women in Rust
- Lunch & Learn: From Protobuf to Production - A Guide to gRPC in Rust
2026-04-29 | Virtual (Girona, ES) | Rust Girona
- Weekly coding session
2026-05-01 | Virtual (Nürnberg, DE) | Rust Nuremberg
- Hacker's Hike 0x1
2026-05-02 | Virtual (Kampala, UG) | Rust Circle Meetup
- Rust Circle Meetup
2026-05-03 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Rust Deep Learning: First Sunday
2026-05-06 | Virtual (Indianapolis, IN, US) | Indy Rust
- Indy.rs - with Social Distancing

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 tried to have polymorphic generics in the early pre-1.0 days, and they quite reasonably gave up because it was too much work. For real Swift, great fucking working for getting all of this to work!

- Aria Desires on her blog

llogiq thanks himself for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: