Seems like people are back from holiday (numbers are for crates.io/crates/sysinfo). :) I'm sad to see so many companies using it but very few sponsoring me... I'm hoping that at some point, opensource maintainers come together and say "if you make money from our work, pay for it". One can dream...

Today I learned new stuff about Rust macros so let's have a "fun with macros" day. :) What does this program display? ``` #![feature(decl_macro)] macro_rules! foo { () => {"a"} } macro foo { () => {"b"} } fn main() { println!("{}", foo!()); } ``` 1/3

Rust in Paris 2026 CfP ends in 7 days. Don't forget to send your talk proposals before then! docs.google.com/forms/d/e/1F... rustinparis.com

We asked our speakers from Rust in Paris 2025 how they felt about this conference. Here is @skade.bsky.social: youtube.com/shorts/e6way... You can find Florian's talk here: youtu.be/DZkW5uozWcw 🎟️ Attending: ti.to/xperhub/rust... See you in 2026. 🦀 #RustLang #Rust #Programming

Just released the `0.15.1` version of the Rust `askama` crate which fixes some issues that appeared with the `0.15.0` version and also removes some limitations on filters. github.com/askama-rs/as... Enjoy!

The copy button in the rustdoc code examples also included the line numbers (when the setting is enabled). It was fixed in github.com/rust-lang/ru....

Just released the 0.15 version of the Rust `askama` crate (which handles `jinja` templates at compile-time). The full changelog is here: github.com/askama-rs/as... 1/3

Rust compiler docs enabled the rustdoc `macro expansion` feature (in github.com/rust-lang/ru...). To see it in action: doc.rust-lang.org/nightly/nigh... doc.rust-lang.org/nightly/nigh... That'll make my life so much easier. :')

Rust GCC backend: Why and How - A detailed Article by Guillaume Gomez @imperioworld.bsky.social #Rust #Compilers blog.guillaume-gomez.fr/articles/202...

The rustdoc "macro expansion" feature (github.com/rust-lang/ru..., give it a try!) keeps allowing us to uncover bugs in our highlighter. The unexpected but very welcome side-effect. :3 Last fix: github.com/rust-lang/ru...

New Rust GCC backend report: blog.antoyo.xyz/rustc_codege... Enjoy!

Why do I have notifications for messages on my reddit topic (www.reddit.com/r/rust/comme...) but when I click on them, there are no messages on the topic. Did I miss something? O.o

Wrote a new blog post: Rust GCC backend - Why and how blog.guillaume-gomez.fr/articles/202... Enjoy!

We asked our speakers from Rust in Paris 2025 how they felt about this conference. Let's start with @bouvier.cc: youtube.com/shorts/jiXLN... You can find Benjamin's talk here: youtu.be/EHu15-E89YY 🎟️ Attending: ti.to/xperhub/rust... See you in 2026. 🦀 #RustLang #Rust #Programming

In case you missed it: "The state of the kernel Rust experiment" lwn.net/SubscriberLi...

If have a malformed attribute in your code, rustc will provide suggestions... but way too many sometimes. So now, if there are more than 3, we just discard all of them (original error is already very nice too). Done in github.com/rust-lang/ru....

The rust internal attribute representation migration is moving forward at fast pace. Just migrated the `doc` attribute to the PR in github.com/rust-lang/ru... (which is a monstruous PR T_T), allowing rustdoc to have access to the super-duper new internal attribute API. =D

Negative trait implementors will now be listed first in the trait implementors list. Implemented in github.com/rust-lang/ru...

Rust 1.92.0 has been released! 🌈 🦀 This version adds RwLockWriteGuard::downgrade(), adds Location::file_as_c_str(), improves diagnostic and validation for various attributes, no longer warns for unused Result<(), Infallible>, and more! Check out the announcement: blog.rust-lang.org/2025/12/11/R...

The Bevy Metrics dashboard is now live at metrics.bevy.org! For each Bevy commit this tracks compile times, binary size, and runs stress tests on standardized, real gaming hardware. These are all graphed to identify historical trends and track down commits that improve or regress the state of Bevy!

Next paris rust meetup will be on the 20th of January 2026 and it will be hosted by Finary! You can register here: www.meetup.com/rust-paris/e...

🚀 Rust in Paris 2026, CFP is now open! Got a Rust talk idea worth sharing? We’re accepting proposals. 📩 Submit: forms.gle/YHDBKSFQU6m2... 🗓️ Deadline: 15 Janvier 2026 🎤 Formats: Conférence / lightning talk For Tickets: ti.to/xperhub/rust... Website: www.rustinparis.com #Rust #RustLang

Rust in Paris 2026 is on. 🇫🇷🦀 A full day dedicated to real-world Rust: performance, safety, tooling, production stories, and the people building the future with it. 🎤 First lineup is here. 🌐 Website: rustinparis.com #Rust #RustLang #Programming #OpenSource

"feeling stupid" moment of the day. Currently migrating lot of rustdoc code to a new API, few tests remaining. Made changes while trying to fix one, re-running tests... One less failure... but not the test I was trying to fix. That was the story. :')

The first lineup for Rust in Paris 2026! We will have Oli, Alejandra and Jana. Can't wait to see their talks! The Cfp is still open until the 15th of January, so please don't hesitate to send your talk proposals: docs.google.com/forms/d/e/1F... See you in Paris in March 2026! www.rustinparis.com

I recently added a lint in the rust compiler and considering that it could prevent CVEs, I think it's worth talking about it. Blog post is here: blog.guillaume-gomez.fr/articles/202... spoiler alert: double cat dose!

Also: we're still looking for sponsors: it'll allow us to pay travels for speakers and eventually individuals. If your company is interested, please reach out to me!

It's time to announce Rust in Paris 2026! It will be on the Friday 27th of March 2026. The CfP is now also open. Don't hesitate to propose your talks: docs.google.com/forms/d/e/1F... You can also buy your ticket here: ti.to/xperhub/rust... See you there! www.rustinparis.com

When the fix is -2 +1 but the explanation of the bugfix is a whole trip through how rustdoc generates link for impl items of type aliases... Well, that allowed me to uncover thinks that need to be changed. More work, yeay. =D PR: github.com/rust-lang/ru...

Super excited to see you all again at RustWeek next year! ✨

Just added `NetBSD` support in the Rust sysinfo crate: github.com/GuillaumeGom... There are still some missing information like: * Product/Motherboard information doesn't work * Temperature information is not retrieved * Process::open_files * Process::root Any help is very welcome!

Next Paris Rust meetup will on the 8th of december and will be hosted by criteo. You can register here: www.meetup.com/rust-paris/e...

🦀 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! 🎉

To expand/collapse sections in rust documentation, you can use `+` and `-` shortcuts. We added `=` to expand sections (since it's the same key as `+`). PR: github.com/rust-lang/ru...

Fixed an invalid proc-macro link generation in the "jump to def" rustdoc feature. Also started to unify code responsible for generating links in rustdoc, but much remains to be done to only have one location to do it all. PR: github.com/rust-lang/ru...

Added a new rustc lint which will hopefully prevent a lot of very wrong casts: `function_casts_as_integer`. In short, if you convert a function to an integer, it will now warn. Why? Because of cases like: ```rust let _ = [0; u8::max as usize]; ``` 1/2

We had a highlighting issue in rustdoc: when some keywords were followed by `!` (like `if !true {}`), they were considered as a macro call. Fixed in github.com/rust-lang/ru....

Working on adding NetBSD support in sysinfo crate. To do so, I'm looking at a lot of other software doing the same thing, allowing me to uncover bugs/potential improvements, like this one in htop: github.com/htop-dev/hto... It's pretty cool to send PRs to projects you've been using since forever =D

@viedecarabin.bsky.social Bonjour, je viens de finir de lire vdc 5 (très sympa) et je me demandais : pourquoi y a-t-il écrit ENIGME dans les bas de pages ? Au début je pensais que c'était un bug d'impression ^^'

Today some bugfixes for rustdoc (and an improvement): * Removed broken special case for index generator: github.com/rust-lang/ru... * Fixed a bug in the "macro expansion" feature: github.com/rust-lang/ru... * Simplified code handling search filtering: github.com/rust-lang/ru...

@yotamofek.bsky.social just joined the rustdoc team! Welcome! github.com/rust-lang/te...

Some rustdoc news: * When you use search and filter on `import`, it will now also include reexported extern (PR: github.com/rust-lang/ru...) * Some cleanup which led to a performance improvement in highlighting (PR: github.com/rust-lang/ru...)

In rustdoc search, when using `macro` filter, it will now include attribute and derive macros as well. PR: github.com/rust-lang/ru...

rust-analyzer now fully uses the new trait solver! 🎉🎉 rust-analyzer.github.io/thisweek/202...

After next docs.rs server update, you will be able to use `additional-targets` in your Cargo.toml docs.rs metadata. That will allow you to not have to re-declare the whole default list target but instead to just add more platforms as you see fit Should simplify things :) github.com/rust-lang/do...

Following changes in Rust tier targets, docs.rs updated the default targets as well. Blog post is here: blog.rust-lang.org/2025/10/16/d...

I'm excited to share what I've been working on with @erikjee.bsky.social: RustNL's #rustlang Maintainers Fund! Many people and companies contributing to Rust, but there are fewer and fewer paid positions for general maintenance (reviews,cleanups,etc). We need to fix that. bsky.app/profile/rust...

If your company is interested in funding Rust maintainers, please reach out to me or @erikjee.bsky.social! You can find our sponsors prospectus here: rustnl.org/resources/Ru... Let me know if you want to talk! 💛 (Message me through Bluesky, Mastodon, Rust Zulip, or email: [email protected])

The Rust GCC backend is now tested as part of the Rust merge CI process. \o/ We should now hopefully spend a lot less time on syncs and focus on increase the support for the GCC backend. PR: github.com/rust-lang/ru...

It's late, so time for cursed codes (they all compile of course). Sweet dreams! 😈 1/4