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? Tweet us at @ThisWeekInRust or send us a pull request. Want to get involved? We love contributions.

This Week in Rust is openly developed on GitHub. If you find any errors in this week's issue, please submit a PR.

What does This Week in Rust mean to you?

This Week in Rust will be the focus of nellshamrell's RustConf keynote in September. She would love if you would help inform the talk by sharing what This Week in Rust means to you on this Reddit post or in the Discourse forums. Thank you!

Updates from Rust Community


Project/Tooling Updates


Rust Walkthroughs



Crate of the Week

This week's crate is loadstone, a bare-metal bootloader for embedded systems.

Thanks to Andres O. Vela for the suggestion.

Submit your suggestions and votes for next week!

Call for Participation

Always wanted to contribute to open-source projects but didn't 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.

Updates from Rust Core

287 pull requests were merged in the last week

Rust Compiler Performance Triage

A very quiet week with only improvements. There was one possible regression, but it was removed from consideration due to only barely impacting a somewhat noisy stress-test benchmark. Untriaged pull requests continue to pile up, but there is still not a good process for dealing with them.

Triage done by @rylev. Revision range: 5c0ca08..998cfe5

0 Regressions, 3 Improvements, 0 Mixed; 0 of them in rollups

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:

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

New RFCs

No new RFCs were proposed this week.

Upcoming Events


North America

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.

Rust Jobs

The Tor Project


Rhebo GmbH




Tweede golf


Tweet us at @ThisWeekInRust to get your job offers listed here!

Quote of the Week

We were able to verify the safety of Rust's type system and thus show how Rust automatically and reliably prevents entire classes of programming errors

Ralf Jung on Eureka Alert Science News

Thanks to Henrik Tougaard for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, and cdmistman.

Discuss on r/rust