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Lint regression: <code>dead_code</code> ignores <code>#[allow(dead_code)]</code> on traits

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

L-false-positiveLint: False positive (should not have fired).Lint: False positive (should not have fired).

P-lowLow priorityLow priority

regression-from-stable-to-nightlyPerformance or correctness regression from stable to nightly.Performance or correctness regression from stable to nightly.

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.

#144060 In rust-lang/rust;

· tgross35 opened on Jul 17, 2025

false positive : single-use-lifetimes <code>'_ is a reserved lifetime name</code>

A-higher-rankedArea: Higher-ranked things (e.g., lifetimes, types, trait bounds aka HRTBs)Area: Higher-ranked things (e.g., lifetimes, types, trait bounds aka HRTBs)

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

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.

A-suggestion-diagnosticsArea: Suggestions generated by the compiler applied by `cargo fix`Area: Suggestions generated by the compiler applied by `cargo fix`

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.

L-false-positiveLint: False positive (should not have fired).Lint: False positive (should not have fired).

L-single_use_lifetimesLint: single_use_lifetimesLint: single_use_lifetimes

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.

#143131 In rust-lang/rust;

· matthiaskrgr opened on Jun 28, 2025

<code>unused_parens</code> false positive in return position of <code>Fn</code> generics, when there is another path segment

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-false-positiveLint: False positive (should not have fired).Lint: False positive (should not have fired).

L-unused_parensLint: unused_parensLint: unused_parens

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.

#143080 In rust-lang/rust;

· sodiboo opened on Jun 27, 2025

"avoid using named labels" mis-identifies inst operand as label

A-inline-assemblyArea: Inline assembly (`asm!(…)`)Area: Inline assembly (`asm!(…)`)

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.

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

L-false-positiveLint: False positive (should not have fired).Lint: False positive (should not have fired).

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.

#143021 In rust-lang/rust;

· androm3da opened on Jun 25, 2025

Item used in (unused) item named <code>_name</code> is still deemed dead

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.

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

L-dead_codeLint: dead_codeLint: dead_code

L-false-positiveLint: False positive (should not have fired).Lint: False positive (should not have fired).

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.

#142075 In rust-lang/rust;

· DoubleHyphen opened on Jun 5, 2025

False positive unused_braces

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.

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.

L-false-positiveLint: False positive (should not have fired).Lint: False positive (should not have fired).

L-unused_bracesLint: unused_bracesLint: unused_braces

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.

#141783 In rust-lang/rust;

· matthiaskrgr opened on May 30, 2025

strange cannot move out of a mutable reference error

A-borrow-checkerArea: The borrow checkerArea: The borrow checker

A-clippyArea: ClippyArea: Clippy

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

D-lack-of-suggestionDiagnostics: Adding a (structured) suggestion would increase the quality of the diagnostic.Diagnostics: Adding a (structured) suggestion would increase the quality of the diagnostic.

L-false-positiveLint: False positive (should not have fired).Lint: False positive (should not have fired).

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.

#139670 In rust-lang/rust;

· Sherlock-Holo opened on Apr 11, 2025

private_bounds: false positive on inherent impl with no public items

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.

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

L-false-positiveLint: False positive (should not have fired).Lint: False positive (should not have fired).

L-private_boundsLint: private_boundsLint: private_bounds

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.

#139158 In rust-lang/rust;

· Kyuuhachi opened on Mar 30, 2025

False-positive <code>unused_parens</code> missing macro cases

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.

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

L-false-positiveLint: False positive (should not have fired).Lint: False positive (should not have fired).

L-unused_parensLint: unused_parensLint: unused_parens

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.

#138234 In rust-lang/rust;

· MultisampledNight opened on Mar 8, 2025

unused_assignments lint has trouble tracking that one match guard observes assignment from another match guard.

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.

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

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

L-false-positiveLint: False positive (should not have fired).Lint: False positive (should not have fired).

L-unused_assignmentsLint: unused_assignmentsLint: unused_assignments

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.

#138069 In rust-lang/rust;

· pnkfelix opened on Mar 5, 2025

false positive for <code>if-let-rescope</code> on enums when the pattern exhaustively matches all cases with significant-drop fields

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

A-edition-2024Area: The 2024 editionArea: The 2024 edition

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.

C-enhancementCategory: An issue proposing an enhancement or a PR with one.Category: An issue proposing an enhancement or a PR with one.

I-edition-triagedIssue: This issue has been reviewed and triaged by the Edition team.Issue: This issue has been reviewed and triaged by the Edition team.

L-false-positiveLint: False positive (should not have fired).Lint: False positive (should not have fired).

L-if_let_rescopeLint: if_let_rescopeLint: if_let_rescope

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.

#137376 In rust-lang/rust;

· steffahn opened on Feb 21, 2025

<code>extern { fn f(_: *const __m128); }</code> emits <code>improper_ctypes</code>

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

L-false-positiveLint: False positive (should not have fired).Lint: False positive (should not have fired).

L-improper_ctypesLint: improper_ctypesLint: improper_ctypes

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.

#135993 In rust-lang/rust;

· zopsicle opened on Jan 24, 2025