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matches is ambiguous

A-resolveArea: Name/path resolution done by `rustc_resolve` specificallyArea: Name/path resolution done by `rustc_resolve` specifically

E-needs-bisectionCall for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustcCall for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc

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.

regression-from-stable-to-betaPerformance or correctness regression from stable to beta.Performance or correctness regression from stable to beta.

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.

#152346 In rust-lang/rust;

· Mark-Simulacrum opened on Feb 8, 2026

regression: undefined symbol: __gxx_personality_v0

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

regression-from-stable-to-betaPerformance or correctness regression from stable to beta.Performance or correctness regression from stable to beta.

S-needs-reproStatus: This issue has no reproduction and needs a reproduction to make progress.Status: This issue has no reproduction and needs a reproduction to make progress.

Status: Open.

#152353 In rust-lang/rust;

· Mark-Simulacrum opened on Feb 8, 2026

#[expect(unused)] false-positive unfulfilled_lint_expectations warning on implemented but unused traits

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

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.

I-lang-nominatedNominated for discussion during a lang team meeting.Nominated for discussion during a lang team meeting.

L-dead_codeLint: dead_codeLint: dead_code

P-lang-drag-2Lang team prioritization drag level 2.https://rust-lang.zulipchat.com/#narrow/channel/410516-t-lang.Lang team prioritization drag level 2.https://rust-lang.zulipchat.com/#narrow/channel/410516-t-lang.

P-mediumMedium priorityMedium priority

regression-from-stable-to-betaPerformance or correctness regression from stable to beta.Performance or correctness regression from stable to beta.

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.

#152370 In rust-lang/rust;

· yuriks opened on Feb 9, 2026

Macro ambiguity with #![no_implicit_prelude]

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

A-resolveArea: Name/path resolution done by `rustc_resolve` specificallyArea: Name/path resolution done by `rustc_resolve` specifically

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

regression-from-stable-to-betaPerformance or correctness regression from stable to beta.Performance or correctness regression from stable to beta.

S-has-bisectionStatus: A bisection has been found for this issueStatus: A bisection has been found for this issue

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#151487 In rust-lang/rust;

· Slickis opened on Jan 22, 2026

Query depth limit overflow due to nested async fn when building matrix_sdk

A-query-systemArea: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html)Area: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html)

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

E-needs-mcveCall for participation: This issue has a repro, but needs a Minimal Complete and Verifiable ExampleCall for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example

regression-from-stable-to-stablePerformance or correctness regression from one stable version to another.Performance or correctness regression from one stable version to another.

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.

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

Status: Open.

#152942 In rust-lang/rust;

· Chiffario opened on Feb 21, 2026