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.

Updates from Rust Community



Project/Tooling Updates


Rust Walkthroughs


Crate of the Week

This week's crate is cfb, a crate to read/write Compound File Binary (structured storage) files.

Thanks to Sebastian Urban for the suggestion!

Please 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 the Rust Project

343 pull requests were merged in the last week

Rust Compiler Performance Triage

A pretty smooth week. All three regressions were small, and two were isolated to rustdoc alone.

Triage done by @pnkfelix. Revision range: f0c4da49..10dccdc7

3 Regressions, 3 Improvements, 1 Mixed; 2 of them in rollups 53 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 new or updated RFCs were submitted 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 and Updated RFCs

Upcoming Events

Rusty Events between 2022-03-09 - 2022-04-06 🦀



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










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

Quote of the Week

Because it is designed not to own. If you need an owning pointer, use Box.

This is like asking "why there is no chocolate mousse in this burger?". Chocolate mousse is delicious, but it does not belong in a burger. If you want chocolate mousse, then that's fine and you can choose to eat it instead of a burger. But at other times you may want a burger instead.

H2CO3 answering why raw pointers don't own on rust-users

Thanks to Deep Majumder for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, andrewpollack, U007D, kolharsam, joelmarcey, mariannegoldin.

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust