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bootstrap: build metrics panics on empty CPU list

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.

#157990 In rust-lang/rust;

· SebTardif opened on Jun 16, 2026

stabilize core::marker::Tuple

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

Status: Open.

#157987 In rust-lang/rust;

· peter-lyons-kehl opened on Jun 16, 2026

rustc_thread_pool::scope can return before all scoped jobs finish if a later panic value panics on drop

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.

#157969 In rust-lang/rust;

· kevin-valerio opened on Jun 16, 2026

supertrait_item_shadowing misses #![deny(ambiguous_glob_imported_traits)] during method lookup

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.

#157965 In rust-lang/rust;

· kevin-valerio opened on Jun 16, 2026

#[track_caller] trait method through Box<dyn Trait> loses the caller location arg

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.

#157964 In rust-lang/rust;

· kevin-valerio opened on Jun 16, 2026

From<PrivateType> for PublicExternalType suppresses dead_code

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

L-dead_codeLint: dead_codeLint: dead_code

L-false-negativeLint: False negative (should have fired but didn't).Lint: False negative (should have fired but didn't).

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.

#157961 In rust-lang/rust;

· kennykerr opened on Jun 16, 2026

Confusing reverse order in dedup_by docs

A-docsArea: Documentation for any part of the project, including the compiler, standard library, and toolsArea: Documentation for any part of the project, including the compiler, standard library, and tools

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.

#157959 In rust-lang/rust;

· m4dh0rs3 opened on Jun 16, 2026

llvm generates UNPREDICTABLE cmp-T2 opcode for cmpxchg thumb

A-atomicArea: Atomics, barriers, and sync primitivesArea: Atomics, barriers, and sync primitives

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.

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.

O-ArmTarget: 32-bit Arm processors (armv6, armv7, thumb...), including 64-bit Arm in AArch32 stateTarget: 32-bit Arm processors (armv6, armv7, thumb...), including 64-bit Arm in AArch32 state

Status: Open.

#157956 In rust-lang/rust;

· sirchnik opened on Jun 16, 2026

[ICE]: Expected to find a suitable Fn/FnMut/FnOnce implementation

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.

WG-trait-system-refactorThe Rustc Trait System Refactor Initiative (-Znext-solver)The Rustc Trait System Refactor Initiative (-Znext-solver)

Status: Open.

#157951 In rust-lang/rust;

· matthiaskrgr opened on Jun 16, 2026

[ICE]: !self.token.kind.is_close_delim_or_eof()

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.

#157950 In rust-lang/rust;

· matthiaskrgr opened on Jun 16, 2026

rustdoc-json: Expose Item stability

A-rustdoc-jsonArea: Rustdoc JSON backendArea: Rustdoc JSON backend

A-stabilityArea: `#[stable]`, `#[unstable]` etc.Area: `#[stable]`, `#[unstable]` etc.

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-json-backendRelevant to the rustdoc JSON backend team, which will review and decide on the PR/issue.Relevant to the rustdoc JSON backend team, which will review and decide on the PR/issue.

Status: Open.

Feature Request

#157940 In rust-lang/rust;

· aDotInTheVoid opened on Jun 15, 2026

[ICE]: var types encountered in structurally_relate_consts: ?1c ?1c

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

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

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.

#157938 In rust-lang/rust;

· matthiaskrgr opened on Jun 15, 2026