Hello and welcome to another issue of This Week in Rust! Rust is a systems language pursuing the trifecta: safety, concurrency, and speed. 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.

News & Blog Posts

Crate of the Week

This week's crate of the week is indicatif, a crate to show nice progress bars on the console. Thanks to Willi Kappler 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.

120 pull requests were merged in the last week.

New Contributors

achernyak

Artem Chernyak

Eh2406

gaurikholkar

Henri Sivonen

Jessica Hamilton

Titus Barik

Approved RFCs

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

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

New RFCs

Style RFCs

Style RFCs are part of the process for deciding on style guidelines for the Rust community and defaults for Rustfmt. The process is similar to the RFC process, but we try to reach rough consensus on issues (including a final comment period) before progressing to PRs. Just like the RFC process, all users are welcome to comment and submit RFCs. If you want to help decide what Rust code should look like, come get involved!

We're making good progress and the style is coming together. If you want to see the style in practice, check out our example or use the Integer32 Playground and select 'Proposed RFC' from the 'Format' menu. Be aware that implementation is work in progress.

PRs:

Issues in final comment period:

Good first issues:

We're happy to mentor these, please reach out to us in #rust-style if you'd like to get involved

Other interesting issues:

Upcoming Events

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

Rust Jobs

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

Quote of the Week

Indeed, it was that very event that lent the world to ruin... It had been decades since the last line of C code was erased, and the last C compiler (written, ironically (but unsurprisingly), in Rust) engraved onto a golden disc and launched toward that distant star around which the GooglePepsiMusk Sphere's construction could be faintly observed. To even utter that fell syllable would be met with swift retaliation from the paramilitary Borrow Xekkers (the alphabet as well having been altered to better suit this shining memory-safe utopia). The whole world, everything, had all been rewritten in Rust, and at last the world knew universal peace and prosperity of boundless proportion. But something stirred... a prophecy ancient in origin. The Second.0 Coming. And when realized at last, the world was divided between the forward-thinking devotees of Rust Two-Point-Oh and those vainly clinging to Rust One-Point-Four-Hundred-And-Seventeen. And thus did The Great Schism rend interstellar civilization in twain. There was but one ray of hope. As the fires of war rushed toward the newly-completed GooglePepsiMusk Sphere, its cadre of elite 1010x programmers set to work. Their task: to write the most advanced compound artificial intelligence ever known, one capable of averting the catastrophe consuming the universe: AlexKryton.exe[1] . Due to Rust's incredible productivity benefits, they completed their task in a mere 22 seconds--and thanks to the Rust compiler's incredible performance, spent only nine months waiting for it compile. Using the artificial black hole at the center of the GPMS, and with only moments to spare, they sent their AI back in time, to the era of Rust's birth: 2011. That's the whole story. And yet those perceptible among you may ask: "which version of Rust did they use?!" Alex alone knows... [1] Yeah, Windows won. Sorry.

— /u/kibwen revealing the origin of a highly advanced AI from future, known today as "Alex Crichton".

Thanks to /u/burkadurka for the suggestion.

Submit your quotes for next week!

This Week in Rust is edited by: nasa42, llogiq, and brson.