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rustdoc: Rewrite HtmlDocCk from Python to Rust and greatly improve XPath support

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

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

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.

Status: Open.

#157172 In rust-lang/rust;

· fmease opened on May 30, 2026

Regression: unnecessary stack frame generated for arm-none-eabi targets

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

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

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.

regression-untriagedUntriaged performance or correctness regression.Untriaged performance or correctness regression.

Status: Open.

#157163 In rust-lang/rust;

· nhpupu opened on May 30, 2026

Extraneous $ in macro by example matcher produces suggestion for nonsensica, syntactically invalid fix

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.

#157157 In rust-lang/rust;

· LunarLambda opened on May 30, 2026

[ICE]: thread 'rustc' (15296) panicked at /rustc-dev/6368fd52cb9f230dfb156097625993e7a8891800/compiler/rustc_errors/src/diagnostic.rs:1345:17:

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.

#157155 In rust-lang/rust;

· umutdenizbalkan opened on May 30, 2026

GCA: tracing crate is unusable

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

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

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

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.

Status: Open.

#157152 In rust-lang/rust;

· nazar-pc opened on May 30, 2026

ICE: "slice index starts at N but ends at N-1" in the annotate-snippets diagnostic renderer when a diagnostic points at a source line containing non-ASCII (multibyte) characters, under --error-format=json

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.

#157148 In rust-lang/rust;

· OpenBST opened on May 30, 2026

[ICE]: region variables should not be hashed

A-incr-compArea: Incremental compilationArea: Incremental compilation

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

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

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.

#157147 In rust-lang/rust;

· matthiaskrgr opened on May 30, 2026

.use expressions inside closures have surprising behavior

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

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

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-langRelevant to the language teamRelevant to the language team

Status: Open.

#157141 In rust-lang/rust;

· theemathas opened on May 30, 2026

Tracking issue for release notes of #155473: Prefer -1 for None

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.

relnotesMarks issues that should be documented in the release notes of the next release.Marks issues that should be documented in the release notes of the next release.

relnotes-tracking-issueMarks issues tracking what text to put in release notes.Marks issues tracking what text to put in release notes.

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.

#157128 In rust-lang/rust;

· rustbot opened on May 29, 2026

·  

1.97.0

ExistentialTraitRef::with_self_ty gets called with escaping bound vars since a few months ago

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

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-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.

#157122 In rust-lang/rust;

· fmease opened on May 29, 2026

Bound error caused by imperfect derives should include links to further explanation

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

A-trait-systemArea: Trait systemArea: Trait system

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

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.

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.

#157117 In rust-lang/rust;

· estebank opened on May 29, 2026

riscv64gc-unknown-fuchsia: rva22+v baseline is inconsistent with triple prefix and incomplete

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.

#157105 In rust-lang/rust;

· jchzhou opened on May 29, 2026