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Rust 1.55.0 Release Notes

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

Rust 1.55.0 공식 release note를 기준으로, 섹션별 앞쪽 항목을 발췌해 변화 흐름을 빠르게 훑을 수 있게 정리했습니다.

범위​

  • 대상 릴리즈: Rust 1.55.0
  • 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 1.55.0 (2021-09-09)​

  • Language
    • You can now write open "from" range patterns (X..), which will start at X and will end at the maximum value of the integer.
    • You can now explicitly import the prelude of different editions through std::prelude (e.g. use std::prelude::rust_2021::*;).
  • Compiler
    • Added tier 3* support for powerpc64le-unknown-freebsd.
  • Libraries
    • Updated std's float parsing to use the Eisel-Lemire algorithm. These improvements should in general provide faster string parsing of floats, no longer reject certain valid floating point values, and reduce the produced code size for non-stripped artifacts.
    • string::Drain now implements AsRef<str> and AsRef<[u8]>.
  • Stabilized APIs
    • Bound::cloned
    • Drain::as_str
    • IntoInnerError::into_error
    • 그 외 15개 항목은 원문 참고
  • Cargo
    • Cargo will now deduplicate compiler diagnostics to the terminal when invoking rustc in parallel such as when using cargo test.
    • The package definition in cargo metadata now includes the "default_run" field from the manifest.
    • Added cargo d as an alias for cargo doc.
    • 그 외 1개 항목은 원문 참고
  • Rustdoc
    • Added "Go to item on exact match" search option.
    • The "Implementors" section on traits no longer shows redundant method definitions.
    • Trait implementations are toggled open by default. This should make the implementations more searchable by tools like CTRL+F in your browser.
    • 그 외 2개 항목은 원문 참고

Sources​