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.await "blowing up" state machine unnecessarily

A-async-awaitArea: Async & AwaitArea: Async & Await

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

I-heavyIssue: Problems and improvements with respect to binary size of generated code.Issue: Problems and improvements with respect to binary size of generated 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.

#152141 In rust-lang/rust;

· gmarcosb opened on Feb 4, 2026

mGCA: type check arguments to array expressions

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

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.

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

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

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.

#152125 In rust-lang/rust;

· BoxyUwU opened on Feb 4, 2026

mGCA: consolidate type const checks on <code>tcx.is_type_const</code>

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

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.

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

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.

#152124 In rust-lang/rust;

· BoxyUwU opened on Feb 4, 2026

mGCA: Support directly represented negated literals

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

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.

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

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

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.

#152123 In rust-lang/rust;

· BoxyUwU opened on Feb 4, 2026

Wrong rust-lld used for target riscv64gc-unknown-linux-gnu

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.

#152098 In rust-lang/rust;

· ACGNnsj opened on Feb 4, 2026

Tracking Issue for <code>uint_carryless_mul</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

E-help-wantedCall for participation: Help is requested to fix this issue.Call for participation: Help is requested to fix this issue.

S-tracking-unimplementedStatus: The feature has not been implemented.Status: The feature has not been implemented.

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.

#152080 In rust-lang/rust;

· okaneco opened on Feb 4, 2026

<code>unused_assignments</code> false positive on diverging path

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

I-prioritizeIssue: Indicates that prioritization has been requested for this issue.Issue: Indicates that prioritization has been requested for this issue.

L-unused_assignmentsLint: unused_assignmentsLint: unused_assignments

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-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.

#152079 In rust-lang/rust;

· oxalica opened on Feb 4, 2026

When returning an unsized place from a closure, should suggest returning a reference to it instead

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

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

A-DSTsArea: Dynamically-sized types (DSTs)Area: Dynamically-sized types (DSTs)

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

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-newcomer-roadblockDiagnostics: Confusing error or lint; hard to understand for new users.Diagnostics: Confusing error or lint; hard to understand for new users.

S-has-mcveStatus: A Minimal Complete and Verifiable Example has been found for this issueStatus: A Minimal Complete and Verifiable Example has been found for this issue

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.

#152064 In rust-lang/rust;

· ais523 opened on Feb 3, 2026

<code>panic_bounds_check</code> isn't optimized away in <code>impl fmt::Display</code> for integers (regression between 1.92 and 1.93)

A-LLVMArea: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.

A-LTOArea: Link-time optimization (LTO)Area: Link-time optimization (LTO)

C-optimizationCategory: An issue highlighting optimization opportunities or PRs implementing suchCategory: An issue highlighting optimization opportunities or PRs implementing such

I-prioritizeIssue: Indicates that prioritization has been requested for this issue.Issue: Indicates that prioritization has been requested for this issue.

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

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

S-has-mcveStatus: A Minimal Complete and Verifiable Example has been found for this issueStatus: A Minimal Complete and Verifiable Example has been found for this issue

Status: Open.

#152061 In rust-lang/rust;

· ZhekaS opened on Feb 3, 2026

Tracking Issue for infallibly converting <code>ExitStatus</code> to <code>ExitCode</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

S-tracking-unimplementedStatus: The feature has not been implemented.Status: The feature has not been implemented.

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.

#152049 In rust-lang/rust;

· ChrisDenton opened on Feb 3, 2026

ICE when coercing a too large array to a trait object

A-dyn-traitArea: trait objects, vtable layoutArea: trait objects, vtable layout

A-layoutArea: Memory layout of typesArea: Memory layout of types

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) ❄️

I-prioritizeIssue: Indicates that prioritization has been requested for this issue.Issue: Indicates that prioritization has been requested for this issue.

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-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.

#152030 In rust-lang/rust;

· theemathas opened on Feb 3, 2026

<code>unused_mut</code> false positive due to borrow-checking error

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

A-destructorsArea: Destructors (`Drop`, …)Area: Destructors (`Drop`, …)

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.

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

L-unused_mutLint: unused_mutLint: unused_mut

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.

#152024 In rust-lang/rust;

· theemathas opened on Feb 3, 2026