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associated function assumed_wf_types repeats parent impl WF work

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

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.

#158237 In rust-lang/rust;

· bunch-suffice-ivy opened on Jun 22, 2026

stable CTFE layout intrinsics expand alias-doubled tuple types exponentially

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

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.

#158236 In rust-lang/rust;

· bunch-suffice-ivy opened on Jun 22, 2026

missing semicolon in doctest has bad recovery (?), parser tries to parse whole module

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.

#158232 In rust-lang/rust;

· jendrikw opened on Jun 21, 2026

SimplifyComparisonIntegral introduces access to a dead local variable

A-mir-optArea: MIR optimizationsArea: MIR optimizations

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

I-miscompileIssue: Correct Rust code lowers to incorrect machine codeIssue: Correct Rust code lowers to incorrect machine code

I-prioritizeIssue needs a team member to assess the impact. Will be replaced by P-{low,medium,high,critical}Issue needs a team member to assess the impact. Will be replaced by P-{low,medium,high,critical}

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.

#158231 In rust-lang/rust;

· tmiasko opened on Jun 21, 2026

str::contains with ASCII char is slower than x.as_bytes().iter().any(|&b| b == c)

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.

#158229 In rust-lang/rust;

· Scripter17 opened on Jun 21, 2026

#[export_stable] should also check whether items are exportable on non-sdylib crate_types

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

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

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

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.

#158227 In rust-lang/rust;

· JonathanBrouwer opened on Jun 21, 2026

MIR_borrow_checking scales with captured-type nesting when an async block is boxed at a distinct return region (the #[async_trait] shape)

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.

#158224 In rust-lang/rust;

· MashPlant opened on Jun 21, 2026

confusing error message when format strings end in %

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.

#158216 In rust-lang/rust;

· jendrikw opened on Jun 21, 2026

riscv64: cargo testsuite: uplift_dwp_of_bin_on_linux fails (foo.dwp missing)

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

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-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.

#158213 In rust-lang/rust;

· yuzibo opened on Jun 21, 2026

[ICE]: slice index out of range in ArArchiveBuilder::build when linking large static archive

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) ❄️

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.

Status: Open.

#158211 In rust-lang/rust;

· sigmaSd opened on Jun 21, 2026

[ICE]: error performing operation: fully_perform

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

I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

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.

Status: Open.

#158210 In rust-lang/rust;

· GalOzRlz opened on Jun 21, 2026

[E0308] suggests u128::from of a Duration

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

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

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

#158208 In rust-lang/rust;

· jendrikw opened on Jun 21, 2026