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Error/warning messages should consistently use <code>let...else</code>

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

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

D-inconsistentDiagnostics: Inconsistency in formatting, grammar or style between diagnostic messages.Diagnostics: Inconsistency in formatting, grammar or style between diagnostic messages.

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.

#148772 In rust-lang/rust;

· carols10cents opened on Nov 10, 2025

E0412 and E0425 are redundant

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

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

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

E-easyCall for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.

E-mentorCall for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion.Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion.

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.

#148558 In rust-lang/rust;

· theemathas opened on Nov 6, 2025

[rustdoc] URL fragments handling should be unified

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

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.

#148547 In rust-lang/rust;

· GuillaumeGomez opened on Nov 5, 2025

cleanup quasi-layout alignment computations

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

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.

#147107 In rust-lang/rust;

· workingjubilee opened on Sep 27, 2025

Cleanup how to handle test discovery between bootstrap &lt;-&gt; compiletest

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

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

Status: Open.

#146498 In rust-lang/rust;

· jieyouxu opened on Sep 13, 2025

Cleanup nullary operator handling

A-MIRArea: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.htmlArea: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

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.

WG-mir-optWorking group: MIR optimizationsWorking group: MIR optimizations

Status: Open.

#146411 In rust-lang/rust;

· RalfJung opened on Sep 10, 2025

<code>fn compute_closure_requirements_modulo_opaques</code> shouldn't clone all its inputs

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

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.

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.

#146079 In rust-lang/rust;

· lcnr opened on Sep 1, 2025

Treat cycle errors as bug by default

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

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

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

I-cycleIssue: A query cycle occurred while none was expectedIssue: A query cycle occurred while none was expected

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.

#145611 In rust-lang/rust;

· lcnr opened on Aug 19, 2025

· 

1.90.0

<code>unused-revision-names</code> compiletest directive has confusing name

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

A-contributor-roadblockArea: Makes things more difficult for new or seasoned contributors to RustArea: Makes things more difficult for new or seasoned contributors to Rust

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

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.

#144748 In rust-lang/rust;

· lolbinarycat opened on Jul 31, 2025

Migrate <code>unused-revision-names</code> check from tidy to compiletest

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

A-tidyArea: The tidy toolArea: The tidy tool

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

E-hardCall for participation: Hard difficulty. Experience needed to fix: A lot.Call for participation: Hard difficulty. Experience needed to fix: A lot.

S-blockedStatus: Blocked on something else such as an RFC or other implementation work.Status: Blocked on something else such as an RFC or other implementation work.

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.

#144671 In rust-lang/rust;

· jieyouxu opened on Jul 30, 2025

Clean up remnants of #110395

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

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

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

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.

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.

#143871 In rust-lang/rust;

· fee1-dead opened on Jul 13, 2025

Tracking issue to remove <code>TyKind::CoroutineWitness</code> from the type system

A-coroutinesArea: CoroutinesArea: Coroutines

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

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-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.

#143017 In rust-lang/rust;

· compiler-errors opened on Jun 25, 2025