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Introduction of fn delegation introduced a theoretical syntax regression (regarding weak keyword <code>reuse</code>)

A-parserArea: The lexing & parsing of Rust source code to an ASTArea: The lexing & parsing of Rust source code to an AST

C-bugCategory: This is a bug.Category: This is a bug.

F-fn_delegation`#![feature(fn_delegation)]``#![feature(fn_delegation)]`

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#148238 In rust-lang/rust;

· fmease opened on Oct 29, 2025

Closure formatting in diagnostics can be a bit verbose

A-closuresArea: Closures (`|…| { … }`)Area: Closures (`|…| { … }`)

A-diagnosticsArea: Messages for errors, warnings, and lintsArea: Messages for errors, warnings, and lints

A-prettyArea: Pretty printing (including `-Z unpretty`)Area: Pretty printing (including `-Z unpretty`)

D-verboseDiagnostics: Too much output caused by a single piece of incorrect code.Diagnostics: Too much output caused by a single piece of incorrect code.

P-lowLow priorityLow priority

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#148236 In rust-lang/rust;

· jieyouxu opened on Oct 29, 2025

Parallel rustc + <code>compare-output-by-lines</code> + edition 2015 loses diagnostic file path / line number in stderr snapshot

A-compiletestArea: The compiletest test runnerArea: The compiletest test runner

A-parallel-compilerArea: parallel compilerArea: parallel compiler

A-test-infraArea: test infrastructure (may span bootstrap/compiletest/more)Area: test infrastructure (may span bootstrap/compiletest/more)

A-testsuiteArea: The testsuite used to check the correctness of rustcArea: The testsuite used to check the correctness of rustc

C-bugCategory: This is a bug.Category: This is a bug.

E-needs-investigationCall for partcipation: This issues needs some investigation to determine current statusCall for partcipation: This issues needs some investigation to determine current status

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#148235 In rust-lang/rust;

· jieyouxu opened on Oct 29, 2025

<code>io::Error</code> can be <code>ErrorKind::Uncategorized</code> when a network filesystem has gone away

A-ioArea: `std::io`, `std::fs`, `std::net` and `std::path`Area: `std::io`, `std::fs`, `std::net` and `std::path`

C-discussionCategory: Discussion or questions that doesn't represent real issues.Category: Discussion or questions that doesn't represent real issues.

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#148229 In rust-lang/rust;

· ssokolow opened on Oct 28, 2025

Tracking Issue for <code>Vec::recycle</code>

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#148227 In rust-lang/rust;

· llogiq opened on Oct 28, 2025

Tracking issue for release notes of #126769: Tracking Issue for <code>substr_range</code> and related methods

needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.This issue may need triage. Remove it if it has been sufficiently triaged.

relnotesMarks issues that should be documented in the release notes of the next release.Marks issues that should be documented in the release notes of the next release.

relnotes-tracking-issueMarks issues tracking what text to put in release notes.Marks issues tracking what text to put in release notes.

T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.

Status: Open.

#148225 In rust-lang/rust;

· rustbot opened on Oct 28, 2025

rustdoc: Tracking issue for generating macro expansions on source code pages

A-macrosArea: All kinds of macros (custom derive, macro_rules!, proc macros, ..)Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..)

A-rustdoc-uiArea: Rustdoc UI (generated HTML)Area: Rustdoc UI (generated HTML)

B-unstableBlocker: Implemented in the nightly compiler and unstable.Blocker: Implemented in the nightly compiler and unstable.

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

S-tracking-needs-to-bakeStatus: The implementation is "complete" but it needs time to bake.Status: The implementation is "complete" but it needs time to bake.

T-rustdocRelevant to the rustdoc team, which will review and decide on the PR/issue.Relevant to the rustdoc team, which will review and decide on the PR/issue.

T-rustdoc-frontendRelevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output.Relevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output.

Status: Open.

#148222 In rust-lang/rust;

· fmease opened on Oct 28, 2025

rustdoc: Source code pages &amp; code blocks should be highlighted according to the requested / ambient edition

A-editionsArea: Related to editions collectively / in general / the mechanism itself.Area: Related to editions collectively / in general / the mechanism itself.

A-rustdoc-uiArea: Rustdoc UI (generated HTML)Area: Rustdoc UI (generated HTML)

C-bugCategory: This is a bug.Category: This is a bug.

T-rustdocRelevant to the rustdoc team, which will review and decide on the PR/issue.Relevant to the rustdoc team, which will review and decide on the PR/issue.

T-rustdoc-frontendRelevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output.Relevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output.

Status: Open.

#148221 In rust-lang/rust;

· fmease opened on Oct 28, 2025

<code>trivial_casts</code> diagnostic creates spurious errors when working with <code>Any</code>

A-diagnosticsArea: Messages for errors, warnings, and lintsArea: Messages for errors, warnings, and lints

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#148219 In rust-lang/rust;

· VorpalBlade opened on Oct 28, 2025

Compiler panics when linking C static library composed with ar+ranlib

C-bugCategory: This is a bug.Category: This is a bug.

I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.This issue may need triage. Remove it if it has been sufficiently triaged.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#148217 In rust-lang/rust;

· DIvanov503 opened on Oct 28, 2025

Tracking issue for release notes of #148214: Consider <code>Result&lt;T, Uninhabited&gt;</code> and <code>ControlFlow&lt;Uninhabited, T&gt;</code> to be equivalent to <code>T</code> for must use lint

A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.

L-unused_must_useLint: unused_must_useLint: unused_must_use

needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.This issue may need triage. Remove it if it has been sufficiently triaged.

relnotesMarks issues that should be documented in the release notes of the next release.Marks issues that should be documented in the release notes of the next release.

relnotes-tracking-issueMarks issues tracking what text to put in release notes.Marks issues tracking what text to put in release notes.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#148215 In rust-lang/rust;

· rustbot opened on Oct 28, 2025

Rust suggests me use <code>compiler_builtins</code> 💀

C-bugCategory: This is a bug.Category: This is a bug.

D-invalid-suggestionDiagnostics: A structured suggestion resulting in incorrect code.Diagnostics: A structured suggestion resulting in incorrect code.

needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.This issue may need triage. Remove it if it has been sufficiently triaged.

Status: Open.

#148212 In rust-lang/rust;

· suprohub opened on Oct 28, 2025