RepoJournal
Rust

@rust-lang

The Rust language, Cargo, and the standard library

What actually shipped in Rust, written up every day — commits, pull requests, releases, and security advisories.

One email a day. Unsubscribe in one click.

Pick a date

  1. Fri 12 jun
  2. Sat 13 jun
  3. Sun 14 jun
  4. Mon 15 jun
  5. Tue 16 jun
  6. Wed 17 jun
  7. Thu 18 jun
  8. Sat 27 jun
  9. Sun 28 jun
  10. Mon 29 jun
  11. Tue 30 jun
  12. Wed 1 jul
  13. Thu 2 jul
  14. Fri 3 jul
  15. Sat 4 jul
  16. Sun 5 jul
  17. Mon 6 jul
  18. Tue 7 jul
  19. Wed 8 jul
  20. Thu 9 jul
  21. Fri 10 jul
  22. Sat 11 jul
  23. Sun 12 jul
  24. Mon 13 jul
  25. Tue 14 jul
  26. Wed 15 jul
  27. Thu 16 jul
  28. Sat 18 jul
  29. Sun 19 jul
  30. Mon 20 jul
Topics: Rust Full archive →

The Wire · Showcase

CROSSBEAM SECURITY FIX LANDS IN RUSTC AS ANALYZER OVERHAULS TYPE HANDLING

By RepoJournal · Filed · About Rust

JonathanBrouwer Romain Perier zedddie github-actions[bot] dfireBird Veykril renovate
9 people shipped this
JonathanBrouwer @JonathanBrouwer 2 cited Romain Perier @rperier 1 cited zedddie @zedddie 1 cited github-actions[bot] @github-actions[bot] 1 cited dfireBird @dfireBird 1 cited Veykril @Veykril 1 cited renovate @renovate 1 cited bors @bors celinval @celinval

Rustc just pulled in a critical crossbeam-epoch security update while rust-analyzer ships a major release with higher-ranked trait bound lowering and memory optimizations.

The compiler absorbed a security patch for crossbeam-epoch 0.9.20 [1] that closes a vulnerability in the epoch-based memory reclamation system. This lands alongside a rollup [2] that hardens JSON doc generation for stdlib internals, fixes an ICE in const-eval inhabitedness checks, and converts target-cpu flags into modular directives for AVR, AMDGCN, and NVPTX backends. A second rollup [3] lands PGO profile gathering in parallel, eliminates underflow bugs in rust-call receivers, and reorganizes the test suite as part of an ongoing GSoC project [4]. On the analyzer front, rust-analyzer's latest release [5] ships support for higher-ranked trait bound lowering [6], a feature that eliminates friction in complex lifetime handling. The analyzer also packed ExprOrPatId storage more efficiently and added database lifetime annotations [7] , cutting memory overhead in large codebases. Docs.rs quietly updated thiserror to 2.0.19 [8] which syncs to syn 3, keeping the documentation pipeline in step with the macro ecosystem.

One email a day. Unsubscribe in one click.

Action items

References

  1. [1] Update rustc crate crossbeam-epoch to 0.9.20 [SECURITY] rust-lang/rust
  2. [2] Rollup of 5 pull requests ↗ rust-lang/rust
  3. [3] Rollup of 6 pull requests ↗ rust-lang/rust
  4. [4] Reorganize `tests/ui/issues` [27/N] ↗ rust-lang/rust
  5. [5] 2026-07-20 ↗ rust-lang/rust-analyzer
  6. [6] feat: implement lowering of HRTB ↗ rust-lang/rust-analyzer
  7. [7] internal: Add a more database lifetimes ↗ rust-lang/rust-analyzer
  8. [8] fix(deps): update rust crate thiserror to v2.0.19 ↗ rust-lang/docs.rs

Quick answers

What shipped in Rust on July 20, 2026?
Rustc just pulled in a critical crossbeam-epoch security update while rust-analyzer ships a major release with higher-ranked trait bound lowering and memory optimizations. In total, 101 commits, 26 pull requests, and 1 releases landed.
Who contributed to Rust on July 20, 2026?
9 developers shipped this update, including bors, Romain Perier, JonathanBrouwer, zedddie, celinval, github-actions[bot], dfireBird, and Veykril, and 1 more.
What were the notable Rust updates?
Update rustc crate crossbeam-epoch to 0.9.20 [SECURITY], Rollup of 5 pull requests, and Rollup of 6 pull requests.

More from @rust-lang

Rust @rust-lang

RUST LANDS BINARY SEARCH IN CONST, CLOSES ANDROID WEAK SYMBOL GAP

The standard library gained const-time binary search and Miri fixed a critical Android I/O gap that broke vectored file operations in testing.

bors Joel-Wwalker Ralf Jung Jonathan Brouwer +2
rust 105 shipped 1-min read
Rust @rust-lang

MIRI OVERHAULS EPOLL STATE TRACKING, FUTURES-RS PATCHES SOUNDNESS BUG

Miri's readiness watcher table got replaced with per-FD state tracking, catching undefined behavior that futures-rs shipped with and forcing an emergency fix.

bors RalfJung WhySoBad Kobzol +3
rust 82 shipped 1-min read
Rust @rust-lang

MIRI OVERHAULS FILE HANDLE LIFECYCLE, RUST TIGHTENS SYMBOL DEFINITION WARNINGS

Miri ripped out the unreliable FileDescription::destroy pattern and fixed critical race conditions around file descriptor closure, while the compiler landed strict new lints against POSIX symbol hijacking that have been catching real production bugs.

bors RalfJung jchlanda Urgau +10
rust 138 shipped 2-min read
Rust @rust-lang

RUST-ANALYZER FIXES MACRO EXTRACTION BUG WHILE COMPILER CLEANS HOUSE

Rust-analyzer's extract variable refactor now preserves whitespace from macro input, fixing a bug that corrupted generated code with invalid syntax like `&mutbar`.

bors cuishuang Michael Ingley Lukas Wirth +5
rust 213 shipped 1-min read

Daily updates, in your inbox

Follow Rust

What actually shipped in Rust, written up every day — commits, pull requests, releases, and security advisories.

or

One email a day. Unsubscribe in one click. Read a past issue →

Elsewhere on the wire

CachyOS @cachyos

LINUX 7.2-RC4 LANDS WITH GAMING SCHEDULER, ANANICY OVERHAULS PROCESS TUNING

CachyOS shipped kernel 7.2-rc4 with a new gaming-optimized scheduler branch and AMD display fixes, while ananicy-rules yanked normal scheduling from most process types in a major behavioral shift.

Eric Naim Aarrayy Luka Ogadze Daniel Lindestad +2
infra 56 shipped 1-min read
Elixir & Phoenix Elixir & Phoenix

ELIXIR COMPILER GETS 20% FASTER TYPE CHECKING

Multi-clause function analysis now runs significantly faster after the core team eliminated unnecessary list allocations in disjoint argument checking.

Alexander Gubarev preciz José Valim
elixir 6 shipped 1-min read
.NET @dotnet

MACIOS FIXES SYMBOL UPLOAD GAP, MSBUILD PULLS ARCADE UPDATES

Apple's App Store Connect will finally see proper crash symbolication for .NET iOS apps after macios shipped a fix that embeds symbol files directly in the .ipa.

dotnet-maestro dependabot Jan Provazník rolfbjarne +2
dotnet 21 shipped 1-min read
FastAPI & Pydantic FastAPI & Pydantic

PYDANTIC DOCS GET GRAMMAR CLEANUP

Pydantic merged a four-typo fix across docs and skill definitions that slipped past CI.

chinesepowered
python 2 shipped 1-min read
Want every project, not just this one?