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Diagnosis of incorrect operator syntax could be more helpful

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.

#149805 In rust-lang/rust;

· TomNicholas opened on Dec 9, 2025

Conflicting unhelpful suggestion related to <code>Peekable::next_if_eq</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.

#149801 In rust-lang/rust;

· Swatinem opened on Dec 9, 2025

Incorrect trailing comma suggested in “pattern requires <code>..</code> due to inaccessible fields” diagnostic for multiline pattern

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.

#149787 In rust-lang/rust;

· narpfel opened on Dec 8, 2025

Suggest struct destructuring when attempting to destructure using range syntax

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.

#149777 In rust-lang/rust;

· Alexendoo opened on Dec 8, 2025

TAIT: requires bounds on type alias when shouldn't

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

A-impl-traitArea: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch.Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch.

A-trait-systemArea: Trait systemArea: Trait system

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

F-type_alias_impl_trait`#[feature(type_alias_impl_trait)]``#[feature(type_alias_impl_trait)]`

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.

#149765 In rust-lang/rust;

· Ddystopia opened on Dec 8, 2025

Incorrect help suggestion in "unsafe attribute used without unsafe" error

A-attributesArea: Attributes (`#[…]`, `#![…]`)Area: Attributes (`#[…]`, `#![…]`)

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

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

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

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

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

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.

#149756 In rust-lang/rust;

· nnethercote opened on Dec 8, 2025

Expose dlopen error when failing to load a proc-macro.

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

A-proc-macrosArea: Procedural macrosArea: Procedural macros

D-confusingDiagnostics: Confusing error or lint that should be reworked.Diagnostics: Confusing error or lint that should be reworked.

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.

#149725 In rust-lang/rust;

· gmorenz opened on Dec 6, 2025

Suggest Option::max on non Ord T instead of call .into_iter()

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.

#149669 In rust-lang/rust;

· kpp opened on Dec 5, 2025

<code>mismatched_lifetime_syntaxes</code> should just say "hidden lifetime parameters are deprecated"

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.

#149668 In rust-lang/rust;

· cormac-ainc opened on Dec 5, 2025

Resolve error in const params doesn't do fuzzy search for consts

A-const-genericsArea: const generics (parameters and arguments)Area: const generics (parameters and arguments)

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

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

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.

D-terseDiagnostics: An error or lint that doesn't give enough information about the problem at hand.Diagnostics: An error or lint that doesn't give enough information about the problem at hand.

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.

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.

#149660 In rust-lang/rust;

· estebank opened on Dec 4, 2025

Binding both borrowed and unborrowed field becomes impossible in the 2024 edition

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

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

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

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.

#149651 In rust-lang/rust;

· Aaron1011 opened on Dec 4, 2025

Incorrect "conflicting implementations" error between two non-overlapping blanket impls

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

D-incorrectDiagnostics: A diagnostic that is giving misleading or incorrect information.Diagnostics: A diagnostic that is giving misleading or incorrect information.

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.

#149650 In rust-lang/rust;

· SludgePhD opened on Dec 4, 2025