Cette année encore s'est tenue la nouvelle édition de la remise des prix humoristico-scientifiques Ig-Nobel, qui récompensent les recherches "qui font rire d'abord et réfléchir ensuite". 🧪 Et cette année encore la cérémonie (et les lauréat·es) ne nous ont pas déçus ! Voici les résultats ⬇️⬇️⬇️ 1/12

New Rust GCC backend update blog post: blog.antoyo.xyz/rustc_codege... A lot of improvements... that you can't enjoy yet as the cg_gcc<->Rust sync is currently blocked. ='D Enjoy!

We lowered the ticket prices for RustWeek! Individual tickets are now 199 instead of 249 euro. ✨ Additionally, we added a checkbox for an extra 100 euro discount, bringing the ticket price to just 99 euros for those who can't afford the full price. 💛

@thierryberger.bsky.social wrote a blog post on his (great) contribution to rustdoc: thierryberger.com/blog/rustdoc... Thanks for the improvement! PS: I'm now a fairy. :) 🧚

Fixed a bug in the rustdoc `--generate-macro-expansion` option (if you never tried it: doc.rust-lang.org/nightly/nigh... or doc.rust-lang.org/nightly/nigh...). When a same macro was generating multiple items, only the last one was visible. Not anymore! github.com/rust-lang/ru...

This change by Noah Lev will probably save a zillion dollars in docs\.rs and CI jobs everywhere. Really nice work! noahlev.org/blog/2026/08...

RustNL's Rust Maintainer Team has grown and now consists of 14 people, including three interns! ✨️ rustnl.org/maintainers/ Together, these people are either the author or a reviewer of more than 30% of all pull requests on the rust-lang/rust repository:

We are very happy to announce our first Maintainers in Residence and Maintainer Grant recipients! Read all about the MiR program and the selected maintainers on our blog: blog.rust-lang.org/2026/08/26/a...

Announcing our first Maintainers in Residence | Rust Blog

Empowering everyone to build reliable and efficient software.

blog.rust-lang.org

Rappel : Le débat sur la transidentité a été réglé il y a déjà plus de 10 ans par Jules-Édouard Moustic (Christian Borde) dans grolandinfo

Markdown tables have... weird handling of case separators. So much that we decided to write a rustdoc lint to prevent it: github.com/rust-lang/ru... I recommend reading the associated issue just to see how cursed it is: github.com/rust-lang/ru...

Add new `invalid_markdown_table` rustdoc lint by GuillaumeGomez · Pull Request #159583 · rust-lang/rust

View all comments Fixes #159186. r? @Urgau

github.com

The beginning of the NumBuffer API on which I worked on (and still work on) is now stable! \o/

Rust Language@rust-lang.org · 2w ago

Rust 1.98.0 has been released! 🌈 🦀 This release includes algebraic floating point methods, NumBuffer for integer formatting, substr_range/subslice_range, strip_circumfix, Atomic<T>::from_mut, and more. ✨ Check out the blog post for all the details: blog.rust-lang.org/2026/08/20/R...

New phoronix article about Rust in the Linux kernel and also about the Rust GCC backend. :) www.phoronix.com/news/Rust-Fo...

Rust For Linux 7.3 Begins Seeing Fixes To Prepare For Rust's GCC Backend

In addition to the POWER/PowerPC code adding Rust kernel support, the main set of Rust programming language updates for the Linux 7.3 kernel have now been submitted

phoronix.com

Rust CI now runs cargo-semver-checks to prevent accidental breakage in the standard library 🦀 If you're wondering why that's important and why it took 15kLoC+, this post is for you. predr.ag/blog/protect...

Protecting the Rust standard library from accidental breakage

How & why we're running cargo-semver-checks in Rust's CI

predr.ag

(rust) Typo of the day -> `think_vec![]` (instead of `thin_vec![]`) =D

Little rustdoc bugfix: the title (the text that appears when you hover an element) of links pointing to the field of a variant didn't mention the variant. For example: `field Enum::field` instead of `field Enum::Variant::field`. PR: github.com/rust-lang/ru...

rustdoc: Fix link title attribute value when field of enum variants by GuillaumeGomez · Pull Request #161054 · rust-lang/rust

Fixes #161028. The issue was that we link to parent page, we generate a &quot;fragment&quot; to the parent item (so here the enum), because we forgot to take into account that there might be two le...

github.com

Big batch of rustdoc improvements was merged today: * Emit a warning if a doc attribute is used on macro call: github.com/rust-lang/ru... * Add new `unused_footnote_definition` rustdoc lint: github.com/rust-lang/ru... * Fix/improve tables background color: github.com/rust-lang/ru... Enjoy!

Also warn if an invalid `doc` attribute is used on a macro invocation by GuillaumeGomez · Pull Request #161003 · rust-lang/rust

Part of #160880. So about this: I think the error message is good enough, but I can specialize it in case it&#39;s not a doc comment but a doc attribute. Also: currently the ignored attributes are ...

github.com

I was asked recently about the cost of running a #rustlang conference and why the ticket prices are what they are. We figured we can just publicly share the numbers for RustWeek, in the name of #transparency. :) 1/9

Today is Bevy's sixth birthday! As always, I've used this as a chance to reflect on the past year and outline my hopes and dreams for the next year of #bevy: bevy.org/news/bevys-s...

i'm really proud of this policy. it's not perfect, but i think it's close to the best that was possible given all the constraints. i'm excited that this will make things easier for mods and reviewers, and hopeful that it will spark change in Rust's governance. blog.rust-lang.org/inside-rust/...

rust-lang/rust is adopting an LLM policy | Inside Rust Blog

Want to follow along with Rust development? Curious how you might get involved? Take a look!

blog.rust-lang.org

After 4 months of PRs, Rust now has a complete I/O module in alloc, and most of one in core. Hopefully a stabilization PR could even be accepted before the end of the year, who knows! doc.rust-lang.org/nightly/allo...

Nevermind! Completely broke Rust CI (after merge, that's new, more fun for the infra team 😈 ) Reverting it. Follow me for more tips on how to make a whole project lose 3 hours of their time with one small PR! T_T

imperio@imperioworld.bsky.social · last mo.

The sync between rust and the GCC backend is done. We were a bit late there but finally caught up. Here's the PR with 224 commits (yep, you read it right ^^'): github.com/rust-lang/ru... Next cg_gcc progress report will be very interesting to read. :3 Next: why do we need to "sync"? 1/2

The sync between rust and the GCC backend is done. We were a bit late there but finally caught up. Here's the PR with 224 commits (yep, you read it right ^^'): github.com/rust-lang/ru... Next cg_gcc progress report will be very interesting to read. :3 Next: why do we need to "sync"? 1/2

Subtree cg_gcc sync (2026-07-24) by GuillaumeGomez · Pull Request #159844 · rust-lang/rust

View all comments cc @antoyo @bjorn3 r? ghost

github.com

Blogged about what I have been up to lately in upstream Rust.

With any luck, this is the cargo-semver-checks release that will start scanning the Rust standard library for breakage. Enjoy v0.50.0! What a fitting moment for a nice round number 🎉 Expect a blog post soon!

New blog post: How to speed up the Rust compiler in July 2026 nnethercote.github.io/2026/07/31/h...

We just merged the fourth (big) rustdoc perf improvement in a row: github.com/rust-lang/ru...: up to -39.9% github.com/rust-lang/ru...: up to -19.1% github.com/rust-lang/ru...: up to -28.4% github.com/rust-lang/ru...: up to -31.4% All because someone encountered a weird bug when using rustdoc. \o/

rustdoc: Only analyze head of self type when deciding impl inlining by camelid · Pull Request #159854 · rust-lang/rust

View all comments We only care about whether the self type is a generic or an item (inlined) in the current crate, so we don&#39;t actually need to compute the param_env, which is expensive when d...

github.com

Added support for "section linking" (putting an item in a specific section in the generated binary so the linker can do more optimizations) in the Rust GCC backend. 13 new Rust tests are now passing. :) PR: github.com/rust-lang/ru...

Add support for section linking by GuillaumeGomez · Pull Request #926 · rust-lang/rustc_codegen_gcc

Now that we have support for the section attribute, we can use it more. The wasm case it still not supported for now.

github.com

The rustdoc `doc_cfg` now takes into account the `cfg_attr` predicates for macro expansion (like `derive()`). It was one of the last blockers for this feature. Not many remaining now. =D PR: github.com/rust-lang/ru...

[rustdoc] Retrieve `cfg_attr` information for derived impls for `doc_cfg` feature by GuillaumeGomez · Pull Request #159722 · rust-lang/rust

View all comments Fixes #103300. After long last, this PR finally allows the derive proc-macro cfg_attr cfg predicates information to be kept so rustdoc can use it for its doc_cfg feature (cc #437...

github.com

Huge perf improvement (up to 34%!) was just merged in rustdoc. Instead of handling trait impls and then filtering them, we now do the opposite. Nice side-effect: notable traits feature now works even better. PR and link to the perf report: github.com/rust-lang/ru...

rustdoc: Only build extern trait impls if needed by camelid · Pull Request #159623 · rust-lang/rust

View all comments or, finally remove the BadImplStripper! Building inlined impls is expensive, and most of them end up being unneeded and stripped later in this function. So we should filter them ...

github.com

Just added support for aliases in Rust GCC backend, which is needed for EII (externally implementable items). Now 51 eii tests out of 60 pass! \o/ Big step forward, hopefully all tests will pass soon. PR: github.com/rust-lang/ru...

Add support for aliases by GuillaumeGomez · Pull Request #918 · rust-lang/rustc_codegen_gcc

Now only 9 tests/ui/eii tests are failing out of 60. I think the remaining ones comes from the link_section that we don&#39;t support yet. Considering most of the work is already done, I think it&#...

github.com