I've updated the rebar benchmarks, and .NET's regex engine in v10 is right about on par with Rust's regex crate! Nice work! (rebar is, I believe, the most comprehensive public regex benchmark in existence.) github.com/BurntSushi/r...

First time seeing this and it is really great! abseil.io/fast/hints.h...

so pumped for the ty beta to finally be here, we did so much great work it rules! astral.sh/blog/ty

** Speaker announcement ** Our next speaker is Andrew "BurntSushi" Gallant! Andrew is a member of the Rust project and maintains many important crates. Info & tickets: 2026.rustweek.org Do you also want to give a talk? Our CFP is open. See you in Utrecht in May! #rustlang #rustweek2026

🦀 I've improved the implementation behind all the string formatting macros in Rust: println, panic, format, write, log::info, etc. (Everything using format_args!().) They will compile a bit faster, use a bit less memory while compiling, result in smaller binaries, and produce more efficient code! 🎉

Jaw droppingly wild. www.youtube.com/watch?v=NPtK...

ripgrep 15 is out! Mostly a host of bug fixes, particularly around gitignore. Some minor perf improvements. A couple small features. And (partial) Jujutsu support for gitignore. github.com/BurntSushi/r...

The crates.​io team was notified of two malicious crates (with similar names as legitimate crates) which were actively searching file contents for Etherum private keys, Solana private keys, and arbitrary byte arrays for exfiltration. See the blog post for details: blog.rust-lang.org/2025/09/24/c...

Happy 10 year anniversary to this tweet! Has memory safety in C++ been solved yet? x.com/CppCon/statu...

Found what appears to be my oldest game save on a physical memory card. From about 18 years ago! This is from The Simpsons: Hit and Run. On a GameCube memory card. I do probably have some N64 memory cards lying around... Hmmm.

We received reports of a phishing campaign targeting crates​.io users. Do not click on links asking to authenticate to protect your account. More information: blog.rust-lang.org/2025/09/12/c...

FYI, I got an obvious phishing attempt in my inbox from `[email protected]` that was masquerading as a security breach notification. It made it past gmail's spam filters. The link goes to the `github.rustfoundation.dev` domain.

Today, we're announcing our first hosted infrastructure product: pyx, a Python-native package registry. We think of pyx as an optimized backend for uv: it’s a package registry, but it also solves problems that go beyond the scope of a traditional "package registry".

Plato, Aug 2010 - July 7, 2025. You never did quite learn how to poop like a normal cat, but I loved you anyway. I'll miss you buddy.

Howdy all. I'm unfortunately not going to be with my employer for much longer due to team relocation. If anyone has any info on roles that would allow me to continue my Rust compiler work (in New York City), they'd be greatly appreciated.

The uv build backend is now stable, and considered ready for production use. An alternative to setuptools, hatchling, etc. for pure Python projects, with a focus on good defaults, user-friendly error messages, and performance. When used with uv, it's 10-35x faster.

spent some time switching #jj-vcs over to @burntsushi.net’s Jiff for datetime handling. look at how much simpler (most) of the code is! github.com/jj-vcs/jj/pu... there are some things i want to improve down the line, like adding reference support to interim so we can pass around an &Zoned, but…

Surprise surprise. Hugo has yet again started failing to build my web site with an unactionable error message. Happens about once per year. I don't stay aprised of Hugo development. I just want it to work. This has gotta be at least one of the reasons why people build their SSG.

Today, we’re announcing the preview release of ty, an extremely fast type checker and language server for Python, written in Rust. In early testing, it's 10x, 50x, even 100x faster than existing type checkers. (We've seen >600x speed-ups over Mypy in some real-world projects.)

Biff is command line tool for datetime arithmetic, parsing, formatting, rounding and more. It's built on top of Jiff, which means it is DST aware and has tight integration with time zones. github.com/BurntSushi/b...

"All in all, I think the documentation [of Jiff] very comprehensive, pretty discoverable, super approachable, and explains its philosophy pretty well. It has lots of explanations and simple how-to guides, and a comprehensive reference." www.harudagondi.space/blog/rust-do...

I marked `xsv` as being officially unmaintained and archived the repository: github.com/BurntSushi/xsv It had been de facto unmaintained for some time and some excellent tools have popped up in its place. So it's time to pass the torch!

I am planning to release Jiff 1.0, a datetime library for Rust, this summer. After that, I do not plan to make breaking changes, possibly indefinitely. I would LOVE LOVE LOVE more experience reports before stabilizing Jiff. Tell your friends. github.com/BurntSushi/j...

Murph (4.5yo son) had his first lesson in historiography yesterday. I was listing off a bunch of random facts about George Washington, and Murph asked where he was. I said he died a long time ago. Then Murph (roughly) asks, "but then how do you know all that about him?"

woops /r/rust posted about facet like... one day too early x) I updated the READMEs with some practical examples, hopefully it shows the value better: github.com/facet-rs/fac...

🦀 Hello World! The Rust project now has an official presence on Bluesky! ✨ We'll be posting the same on our Mastodon and Bluesky accounts, so you won't miss anything on either platform.

Thought about doing a datetime lib for Rust after hitting the wall with chrono, but found Jiff has gotten to a good state.. github.com/BurntSushi/j...

I don't know if these are the right people to get behind. There are probably others. But it seems to me like they're doing good work in bringing litigation against DOGE, OPM and so on. So I donated. www.nationalsecuritylaw.org/donate

Rob Landley wrote what I believe to be the most accurate historical retelling of how we ended up with a mess on the file system. That retelling also has a lesson at the end about bureaucracy :) lists.busybox.net/pipermail/bu...

uv makes it easy to benchmark uv

In the latest version of uv, we've updated the build system for our managed Python versions to use the latest LLVM version and cherry-picked an extra fix for a performance bug (github.com/llvm/llvm-pr...) and the early benchmarks are pretty exciting! On M3 macOS

It seems likely that there will be a RUSTSEC advisory for `humantime` being unmaintained. This is a reminder that Jiff should cover all of the use cases of `humantime`. Specifically, its friendly duration format was specifically designed with this in mind: docs.rs/jiff/latest/...

The orphan trait rules in Rust were supposed to prevent these kinds of breakages. But alas, when you rely on type inference working because of a single trait impl, we kind of end back up with the same kind of problem? github.com/BurntSushi/j...

jiff 0.2.2 is out with massive performance improvements for time zone lookups, and core-only (NO heap allocation) support for using time zones. This should bring Jiff into parity with what you can do with `chrono-tz`. github.com/BurntSushi/j...

Does anyone know of any good materials that explain, with examples, why `strftime` APIs are not good for formatting datetimes in a particular locale? (I have some guesses, but I'm looking for something more authoritative from an expert that I can point folks to.)

I found this video very useful in at least beginning to make sense of what is actually happening. (Although as Devin says at the end, this is actually extremely difficult!)

This week is the first time I used a rice cooker. Wow! I knew they existed before, but it just never really entered my awareness. In terms of convenience, it's like sous vide, but for rice. Total game changer in terms of time management for dinner prep.

Love the song! smallcultfollowing.com/babysteps/bl...

it makes absolute intuitive sense that all your memory safety bugs would be uniformly distributed but if your codebase is like that it should be declared a superfund site and quarantined from the public because that means you have hundreds of ancient buffer overflows that never get fixed

jiff 0.2.1 is out with some massive performance improvements!

jiff 0.2 is out! There are several breaking changes (although the overall API organization remains unchanged). This release also comes with new crates for integrating with ICU4X, SQLx and Diesel. github.com/BurntSushi/j...

"Safety hygiene is the practice of denoting and documenting where memory safety obligations arise and where they are discharged."

We’re building a new static type checker for Python, from scratch, in Rust. From a technical perspective, it’s probably our most ambitious project yet. We’re about 800 PRs deep!

I encourage folks to share benchmarks on the Jiff tracker. While parts of Jiff have been optimized, it has NOT been my focus. Benchmarks will help guide prioritization. :-) github.com/BurntSushi/j...

We're continuing to grow the Astral team, and every hire we make is like a dream hire. I don't understand how we're doing it but it rules. This time, it's @gankra.bsky.social! Most recently CTO at Axo, author of cargo-dist, author of The Rustonomicon, Rust 1.0 team member, and more.

Temporal is getting close to shipping in browsers! developer.mozilla.org/en-US/blog/j...

“Celebrated are the minimal dependencies, the humble function that just quietly does the job, the code that doesn't need to be touched for years because it was done right once.” lucumr.pocoo.org/2025/1/24/bu...

I'm super excited to see byte string types coming soon to a Rust standard library near you! github.com/rust-lang/ru...

It's 3 months old, but I just discovered someone who did a comparison of the `jiff`, `chrono`, `time` and `hifitime` Rust crates who *isn't* a maintainer of those crates. Verdict: "Jiff: seems to resolve all the issues with the other time crates." github.com/cdbennett/ru...