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wire 2026-05-31
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$ the-wire · showcase

COMPILER FIXES YIELD SEMANTICS WHILE TEAM WELCOMES THREE NEW CONTRIBUTORS

By RepoJournal · Filed · About Rust · Composed from the cited sources · methodology

Amanieu Gelbpunkt
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

References

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

$ ls rust-lang/reviews/ # the step-back reads

the week in review rustc to stop silently dropping unknown LLVM diagnostics the month in review Rust 1.99.0 lands with new raw-borrow lint
Full archive → Weekly reviews →

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.
♥

$ log @rust-lang --recent

docs.rs gets a lockfile refresh, rust-analyzer learns E0220 112 shipped Crates.io closes a crate-scope bypass 184 shipped Array drops fixed in order after partial moves 115 shipped rustup reworks directory overrides to match by identity, not canonical path 83 shipped

$ log --all # elsewhere on the wire

Agent Security Quiet day in agent security as guard coverage reaches four clients Alignment & Post-training verl defaults Ascend RL mode, open-instruct unblocks SFT packing

$ ls showcases/

Safety Evals AI Red Teaming Agent Security Interpretability Alignment & Post-training

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