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Rust 1.38.0 Release Notes

// RUST-RELEASE-NOTES — official release note timeline

Rust 1.38.0 공식 release note를 기준으로, 섹션별 앞쪽 항목을 발췌해 변화 흐름을 빠르게 훑을 수 있게 정리했습니다.

범위​

  • 대상 릴리즈: Rust 1.38.0
  • 포함된 릴리즈 수: 1개
  • 생성 경로: scripts/bloggen.py rust-release-docs
  • 생성일: 2026-07-08
  • 원문: rust-lang/rust RELEASES.md

읽는 법​

  • 이 문서는 해당 Rust 릴리즈 하나만 다룹니다.
  • 섹션별 최대 3개 앞쪽 항목만 발췌했으므로, 세부 API 목록은 원문 링크를 확인하세요.
  • Compatibility Notes는 업그레이드 전 회귀 위험을 확인하는 체크리스트로 보면 됩니다.

타임라인​

Rust 1.38.0 (2019-09-26)​

  • Language
    • The #[global_allocator] attribute can now be used in submodules.
    • The #[deprecated] attribute can now be used on macros.
  • Compiler
    • Added pipelined compilation support to rustc. This will improve compilation times in some cases. For further information please refer to the "Evaluating pipelined rustc compilation" thread.
    • Added tier 3* support for the aarch64-uwp-windows-msvc, i686-uwp-windows-gnu, i686-uwp-windows-msvc, x86_64-uwp-windows-gnu, and x86_64-uwp-windows-msvc targets.
    • Added tier 3 support for the armv7-unknown-linux-gnueabi and armv7-unknown-linux-musleabi targets.
    • 그 외 3개 항목은 원문 참고
  • Libraries
    • ascii::EscapeDefault now implements Clone and Display.
    • Derive macros for prelude traits (e.g. Clone, Debug, Hash) are now available at the same path as the trait. (e.g. The Clone derive macro is available at std::clone::Clone). This also makes all built-in macros available in std/core root. e.g. std::include_bytes!.
    • str::Chars now implements Debug.
    • 그 외 6개 항목은 원문 참고
  • Stabilized APIs
    • <*const T>::cast
    • <*mut T>::cast
    • Duration::as_secs_f32
    • 그 외 8개 항목은 원문 참고
  • Cargo
    • Added pipelined compilation support to cargo.
    • You can now pass the --features option multiple times to enable multiple features.
  • Rustdoc
    • Documentation on pub use statements is prepended to the documentation of the re-exported item

Sources​