Who contributed to Rust on May 31, 2026?

2 developers shipped this update, including Amanieu and Gelbpunkt.

What were the notable Rust updates?

Rollup merge of #156875 - cjgillot:yield-drop-resume, r=oli-obk, Add 3 new libs-contributors, and 1.1.29.

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COMPILER FIXES YIELD SEMANTICS WHILE TEAM WELCOMES THREE NEW CONTRIBUTORS

By RepoJournal · Filed 06:03 UTC on May 31, 2026 · About Rust

2 people shipped this

Amanieu @Amanieu 1 cited

Gelbpunkt @Gelbpunkt 1 cited

Rust's async drop implementation got the correctness fix it needed overnight, and the standards committee just expanded.

The compiler team shipped a critical fix to yield terminator dataflow that corrects how the drop target and unwinding are handled [1]. This matters because the previous implementation confused these two paths, which breaks async drops. The fix comes bundled with documentation that clarifies the semantics for future maintainers [1]. In parallel, the team expanded its contributor roster, welcoming @Darksonn, @LawnGnome, and @aapoalas as new libs-contributors [2]. On the infrastructure side, libz-sys 1.1.29 shipped with loongarch architecture support [3], fixing builds on that platform by including missing CMakeLists.txt references [4]. The compiler also cleaned up visibility in value_analysis.rs and removed unused functions [5], keeping the codebase tighter as we approach the next release cycle.

Action items

→ Review yield semantics changes in your async code if you're using drop in futures rust-lang/rust [plan]
→ Update libz-sys to 1.1.29 if building for loongarch64 rust-lang/libz-sys [immediate]
→ Monitor compiler rollups for potential regressions in coroutine transforms rust-lang/rust [monitor]

References

[1] Rollup merge of #156875 - cjgillot:yield-drop-resume, r=oli-obk rust-lang/rust
[2] Add 3 new libs-contributors ↗ rust-lang/team
[3] 1.1.29 ↗ rust-lang/libz-sys
[4] zlib-ng: Include loongarch architecture folder ↗ rust-lang/libz-sys
[5] Rollup merge of #157004 - nnethercote:value_analysis-visibility, r=cjgillot rust-lang/rust

Quick answers

What shipped in Rust on May 31, 2026?: Rust's async drop implementation got the correctness fix it needed overnight, and the standards committee just expanded. In total, 102 commits, 21 pull requests, and 1 releases landed.
Who contributed to Rust on May 31, 2026?: 2 developers shipped this update, including Amanieu and Gelbpunkt.
What were the notable Rust updates?: Rollup merge of #156875 - cjgillot:yield-drop-resume, r=oli-obk, Add 3 new libs-contributors, and 1.1.29.

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