Rust Versions

Rust Versions #

  • Stable: 1.86.0
  • Beta: 1.87.0 (15 May, 2025, 19 days left)
  • Nightly: 1.88.0 (26 June, 2025, 61 days left)

Ongoing Stabilization PRs #

Stabilize fn_align: #[repr(align(N))] on functions and -Zmin-function-alignment (1 day old)
  • A-attributes - Area: Attributes (#[…], #![…])
  • T-lang - Relevant to the language team, which will review and decide on the PR/issue.
  • T-compiler - Relevant to the compiler team, which will review and decide on the PR/issue.
  • S-waiting-on-review - Status: Awaiting review from the assignee but also interested parties.
  • I-lang-nominated - Nominated for discussion during a lang team meeting.
  • F-fn_align - #![feature(fn_align)]

Open PR #140261

Stabilize <[T; N]>::as_mut_slice as const (5 days old)
  • T-libs-api - Relevant to the library API team, which will review and decide on the PR/issue.
  • final-comment-period - In the final comment period and will be merged soon unless new substantive objections are raised.
  • S-waiting-on-review - Status: Awaiting review from the assignee but also interested parties.
  • disposition-merge - This issue / PR is in PFCP or FCP with a disposition to merge it.

Open PR #140066

Stabilize proc_macro::Span::{start,end,line,column}. (10 days old)
  • T-libs-api - Relevant to the library API team, which will review and decide on the PR/issue.
  • S-waiting-on-bors - Status: Waiting on bors to run and complete tests. Bors will change the label on completion.
  • disposition-merge - This issue / PR is in PFCP or FCP with a disposition to merge it.
  • finished-final-comment-period - The final comment period is finished for this PR / Issue.
  • needs-fcp - This change is insta-stable, so needs a completed FCP to proceed.
  • S-waiting-on-fcp - Status: PR is in FCP and is awaiting for FCP to complete.
  • A-proc-macros - Area: Procedural macros
  • to-announce - Announce this issue on triage meeting

Open PR #139865

Stabilize offset_of_slice (14 days old)
  • T-compiler - Relevant to the compiler team, which will review and decide on the PR/issue.
  • S-waiting-on-author - Status: This is awaiting some action (such as code changes or more information) from the author.
  • T-libs - Relevant to the library team, which will review and decide on the PR/issue.

Open PR #139673

Stabilize slice_as_chunks library feature (15 days old)
  • S-waiting-on-review - Status: Awaiting review from the assignee but also interested parties.
  • T-libs - Relevant to the library team, which will review and decide on the PR/issue.

Open PR #139656

Stabilize precise capture syntax in style guide (17 days old)
  • S-waiting-on-review - Status: Awaiting review from the assignee but also interested parties.
  • T-style - Relevant to the style team, which will review and decide on the PR/issue.

Open PR #139518

Stabilize the avx512 target features (31 days old)
  • T-lang - Relevant to the language team, which will review and decide on the PR/issue.
  • relnotes - Marks issues that should be documented in the release notes of the next release.
  • S-waiting-on-review - Status: Awaiting review from the assignee but also interested parties.
  • proposed-final-comment-period - Proposed to merge/close by relevant subteam, see T- label. Will enter FCP once signed off.
  • disposition-merge - This issue / PR is in PFCP or FCP with a disposition to merge it.
  • I-lang-nominated - Nominated for discussion during a lang team meeting.

Open PR #138940

Stabilize return type notation (RFC 3654) (44 days old)
  • T-lang - Relevant to the language team, which will review and decide on the PR/issue.
  • S-waiting-on-review - Status: Awaiting review from the assignee but also interested parties.
  • proposed-final-comment-period - Proposed to merge/close by relevant subteam, see T- label. Will enter FCP once signed off.
  • disposition-merge - This issue / PR is in PFCP or FCP with a disposition to merge it.
  • T-types - Relevant to the types team, which will review and decide on the PR/issue.
  • S-waiting-on-documentation - Status: Waiting on approved PRs to documentation before merging
  • I-lang-radar - Items that are on lang’s radar and will need eventual work or consideration.

Open PR #138424

Stabilize repr128 (47 days old)
  • T-lang - Relevant to the language team, which will review and decide on the PR/issue.
  • S-waiting-on-review - Status: Awaiting review from the assignee but also interested parties.
  • disposition-merge - This issue / PR is in PFCP or FCP with a disposition to merge it.
  • finished-final-comment-period - The final comment period is finished for this PR / Issue.
  • to-announce - Announce this issue on triage meeting
  • A-rustdoc-json - Area: Rustdoc JSON backend
  • I-lang-nominated - Nominated for discussion during a lang team meeting.
  • A-run-make - Area: port run-make Makefiles to rmake.rs
  • A-tidy - Area: The tidy tool

Open PR #138285

Stabilise os_string_pathbuf_leak (52 days old)
  • T-libs-api - Relevant to the library API team, which will review and decide on the PR/issue.
  • S-waiting-on-review - Status: Awaiting review from the assignee but also interested parties.
  • proposed-final-comment-period - Proposed to merge/close by relevant subteam, see T- label. Will enter FCP once signed off.
  • disposition-merge - This issue / PR is in PFCP or FCP with a disposition to merge it.

Open PR #137992

Stabilize assert_matches and move it to core::macros (61 days old)
  • T-libs-api - Relevant to the library API team, which will review and decide on the PR/issue.
  • S-blocked - Status: Blocked on something else such as an RFC or other implementation work.

Open PR #137487

Stabilise std::ffi::c_str (62 days old)
  • S-waiting-on-review - Status: Awaiting review from the assignee but also interested parties.
  • T-libs - Relevant to the library team, which will review and decide on the PR/issue.

Open PR #137439

stabilize ptr::swap_nonoverlapping in const (65 days old)
  • T-lang - Relevant to the language team, which will review and decide on the PR/issue.
  • T-libs-api - Relevant to the library API team, which will review and decide on the PR/issue.
  • final-comment-period - In the final comment period and will be merged soon unless new substantive objections are raised.
  • disposition-merge - This issue / PR is in PFCP or FCP with a disposition to merge it.
  • S-waiting-on-fcp - Status: PR is in FCP and is awaiting for FCP to complete.
  • I-lang-nominated - Nominated for discussion during a lang team meeting.

Open PR #137280

Stabilize query cache size by fixing encoding order of some query results (67 days old)
  • T-compiler - Relevant to the compiler team, which will review and decide on the PR/issue.
  • S-waiting-on-review - Status: Awaiting review from the assignee but also interested parties.
  • A-query-system - Area: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html)
  • perf-regression - Performance regression.

Open PR #137196

Partially stabilize LoongArch target features (113 days old)
  • T-lang - Relevant to the language team, which will review and decide on the PR/issue.
  • relnotes - Marks issues that should be documented in the release notes of the next release.
  • S-waiting-on-review - Status: Awaiting review from the assignee but also interested parties.
  • proposed-final-comment-period - Proposed to merge/close by relevant subteam, see T- label. Will enter FCP once signed off.
  • disposition-merge - This issue / PR is in PFCP or FCP with a disposition to merge it.
  • A-target-feature - Area: Enabling/disabling target features like AVX, Neon, etc.
  • O-loongarch - Target: LoongArch (LA32R, LA32S, LA64)
  • I-lang-radar - Items that are on lang’s radar and will need eventual work or consideration.

Open PR #135015

Stabilize derive(CoercePointee) (143 days old)
  • T-lang - Relevant to the language team, which will review and decide on the PR/issue.
  • S-waiting-on-author - Status: This is awaiting some action (such as code changes or more information) from the author.
  • proposed-final-comment-period - Proposed to merge/close by relevant subteam, see T- label. Will enter FCP once signed off.
  • disposition-merge - This issue / PR is in PFCP or FCP with a disposition to merge it.
  • S-waiting-on-fcp - Status: PR is in FCP and is awaiting for FCP to complete.
  • I-types-nominated - Nominated for discussion during a types team meeting.
  • T-types - Relevant to the types team, which will review and decide on the PR/issue.
  • F-derive_coerce_pointee - Feature: RFC 3621’s oft-renamed implementation
  • S-waiting-on-concerns - Status: Awaiting concerns to be addressed by the author
  • I-lang-radar - Items that are on lang’s radar and will need eventual work or consideration.

Open PR #133820

Stabilize tcp_quickack (253 days old)
  • O-linux - Operating system: Linux
  • O-android - Operating system: Android
  • T-libs-api - Relevant to the library API team, which will review and decide on the PR/issue.
  • S-waiting-on-review - Status: Awaiting review from the assignee but also interested parties.
  • needs-fcp - This change is insta-stable, so needs a completed FCP to proceed.
  • T-libs - Relevant to the library team, which will review and decide on the PR/issue.

Open PR #129121

stabilize std::path::Path::file_prefix (254 days old)
  • T-libs-api - Relevant to the library API team, which will review and decide on the PR/issue.
  • needs-fcp - This change is insta-stable, so needs a completed FCP to proceed.
  • S-waiting-on-fcp - Status: PR is in FCP and is awaiting for FCP to complete.
  • T-libs - Relevant to the library team, which will review and decide on the PR/issue.
  • A-run-make - Area: port run-make Makefiles to rmake.rs

Open PR #129114

Stabilize associated type position impl Trait (ATPIT) (444 days old)
  • T-lang - Relevant to the language team, which will review and decide on the PR/issue.
  • S-waiting-on-review - Status: Awaiting review from the assignee but also interested parties.
  • A-impl-trait - Area: impl Trait. Universally / existentially quantified anonymous types with static dispatch.
  • proposed-final-comment-period - Proposed to merge/close by relevant subteam, see T- label. Will enter FCP once signed off.
  • disposition-merge - This issue / PR is in PFCP or FCP with a disposition to merge it.
  • T-types - Relevant to the types team, which will review and decide on the PR/issue.
  • F-impl_trait_in_assoc_type - #![feature(impl_trait_in_assoc_type)]

Open PR #120700

About releases.rs #

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