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parallel compiler: <code>threads::spawn</code>ning loop not reproducible

A-parallel-compilerArea: parallel compilerArea: parallel compiler

A-reproducibilityArea: Reproducible / deterministic buildsArea: Reproducible / deterministic builds

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.

#150451 In rust-lang/rust;

· matthiaskrgr opened on Dec 27, 2025

slice::contains<code>runtime doubles when an unrelated</code>binary_search<code> benchmark is present</code>

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.

#150450 In rust-lang/rust;

· Gourab-Ghosh opened on Dec 27, 2025

Tracking issue for MCP 954: Allow combining <code>--help -C help -Z help -W help</code> in one invocation

B-MCP-approvedBlocker: Approved by an accepted MCP but not yet fully implemented.Blocker: Approved by an accepted MCP but not yet fully implemented.

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-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.

#150442 In rust-lang/rust;

· rustbot opened on Dec 27, 2025

ICE: args not compatible with generics for abi::FnAbiGccExt

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.

requires-debug-assertionsThis issue requires a build of rustc or tooling with debug-assertions in some wayThis issue requires a build of rustc or tooling with debug-assertions in some way

T-clippyRelevant to the Clippy team.Relevant to the Clippy team.

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.

#150440 In rust-lang/rust;

· bjorn3 opened on Dec 27, 2025

Tracking issue for release notes of #145948: Stabilize 29 RISC-V target features (<code>riscv_ratified_v2</code>)

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-riscvTarget: RISC-V architectureTarget: RISC-V architecture

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-langRelevant to the language teamRelevant to the language team

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.

#150439 In rust-lang/rust;

· rustbot opened on Dec 27, 2025

Tracking issue for release notes of #139493: Explicitly export core and std macros

A-rustdoc-searchArea: Rustdoc's search featureArea: Rustdoc's search feature

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.

T-langRelevant to the language teamRelevant to the language team

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.

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.

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.

#150437 In rust-lang/rust;

· rustbot opened on Dec 27, 2025

LLVM instruction selection error when spilling operand debuginfo to stack for AArch64 SVE predicates <code>&lt;vscale x N x i1&gt;</code> where <code>N != 16</code>

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.

#150419 In rust-lang/rust;

· h3fang opened on Dec 27, 2025

RPITIT implementation requires bounds inconsistently

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.

#150418 In rust-lang/rust;

· QuineDot opened on Dec 27, 2025

GAT implementation requires bounds inconsistently

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.

#150417 In rust-lang/rust;

· QuineDot opened on Dec 27, 2025

Offload generates wrong declarations for LLVM target routines

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.

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

Status: Open.

#150415 In rust-lang/rust;

· kevinsala opened on Dec 27, 2025

m68k-unknown-none-elf target docs aren't no-std

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

A-targetsArea: Concerning the implications of different compiler targetsArea: Concerning the implications of different compiler targets

O-motorola68kTarget: Rust from the parallel universe where the Amiga won.Target: Rust from the parallel universe where the Amiga won.

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.

#150414 In rust-lang/rust;

· Noratrieb opened on Dec 26, 2025

std::offload fails on control flow in main

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

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

Status: Open.

#150413 In rust-lang/rust;

· ZuseZ4 opened on Dec 26, 2025