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Diags <code>unused_crate_dependencies</code>&amp;<code>unused_extern_crates</code> "errneously" issued w/ <code>-Z build-std</code>

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.

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.

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.

#152561 In rust-lang/rust;

· LebedevRI opened on Feb 13, 2026

unreachable code can't be removed without type errors

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.

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.

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

L-unreachable_codeLint: unreachable_codeLint: unreachable_code

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.

#152559 In rust-lang/rust;

· ericseppanen opened on Feb 13, 2026

Tracking issue for MCP 965: For <code>nvptx64</code>, drop old CPUs and ISAs - drop support for <code>target-cpu</code> &lt; SM 7.0 and PTX ISA &lt; 7.0

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.

#152553 In rust-lang/rust;

· rustbot opened on Feb 12, 2026

[ICE]: <code>invalid rigid alias in layout_of after normalization</code>

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) ❄️

P-highHigh priorityHigh priority

regression-from-stable-to-betaPerformance or correctness regression from stable to beta.Performance or correctness regression from stable to beta.

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.

#152545 In rust-lang/rust;

· matthiaskrgr opened on Feb 12, 2026

<code>MaybeUninit::uninit</code> zero initializes large uninit array besides small other field

A-codegenArea: Code generationArea: Code generation

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.

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

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.

#152541 In rust-lang/rust;

· steffahn opened on Feb 12, 2026

<code>riscv64a23-unknown-linux-gnu</code> promotion not reflected in 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

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

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.

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

Status: Open.

#152539 In rust-lang/rust;

· jpalus opened on Feb 12, 2026

Initial AArch64 Pointer Authentication support for interop with C - maintainer opinion needed

A-FFIArea: Foreign function interface (FFI)Area: Foreign function interface (FFI)

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-discussionCategory: Discussion or questions that doesn't represent real issues.Category: Discussion or questions that doesn't represent real issues.

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-AArch64Armv8-A or later processors in AArch64 modeArmv8-A or later processors in AArch64 mode

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

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.

#152532 In rust-lang/rust;

· jchlanda opened on Feb 12, 2026

<code>multirust-channel-manifest.toml</code> should have reproducible hash

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

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-releaseRelevant to the release subteam, which will review and decide on the PR/issue.Relevant to the release subteam, which will review and decide on the PR/issue.

Status: Open.

#152537 In rust-lang/rust;

· loynoir opened on Feb 12, 2026

Borrow checking false positive on inferred closure type and borrowed fields

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.

#152526 In rust-lang/rust;

· senioria opened on Feb 12, 2026

[ICE]: fulfillment_errors: index out of bounds: the len is 1 but the index is 1

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.

#152518 In rust-lang/rust;

· matthiaskrgr opened on Feb 12, 2026

rustdoc-json: links to associated items like methods have ids that don't exist in <code>index</code> or <code>paths</code>

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

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

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.

#152511 In rust-lang/rust;

· jbr opened on Feb 12, 2026

Cleanup: go through <code>bootstrap.py</code> and make sure we specify explicit <code>open()</code> encodings

A-PythonArea: Python, like bootstrap/CI scripts or linters/formatters, etc.Area: Python, like bootstrap/CI scripts or linters/formatters, etc.

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

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.

#152510 In rust-lang/rust;

· jieyouxu opened on Feb 12, 2026