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ICE <code>all spans must be disjoint</code> (attrs)

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

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

D-non-disjoint-spansDiagnostics: non-disjoint spansDiagnostics: non-disjoint spans

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

P-mediumMedium priorityMedium 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.

#146808 In rust-lang/rust;

· matthiaskrgr opened on Sep 20, 2025

Regression: #[no_mangle] symbols duplicated during test compilation starting nightly-2025-08-15

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-lang-radarItems that are on lang's radar and will need eventual work or consideration.Items that are on lang's radar and will need eventual work or consideration.

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-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.

#145616 In rust-lang/rust;

· joseluis opened on Aug 19, 2025

<code>cargo doc</code> in large workspace is 10 times slower on nightly

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

I-compiletimeIssue: Problems and improvements with respect to compile times.Issue: Problems and improvements with respect to compile times.

P-criticalCritical priorityCritical priority

perf-regressionPerformance regression.Performance regression.

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

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.

#146895 In rust-lang/rust;

· madsmtm opened on Sep 22, 2025

Searching nightly docs is inconsistently slow

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

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

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

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-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.

#146048 In rust-lang/rust;

· Zalathar opened on Aug 31, 2025

distinct non-zst parameters have the same address

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.

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

llvm-fixed-upstreamIssue expected to be fixed by the next major LLVM upgrade, or backported fixesIssue expected to be fixed by the next major LLVM upgrade, or backported fixes

P-mediumMedium priorityMedium priority

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

S-has-mcveStatus: A Minimal Complete and Verifiable Example has been found for this issueStatus: A Minimal Complete and Verifiable Example 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.

#145956 In rust-lang/rust;

· tmiasko opened on Aug 28, 2025

assert desugaring change is backwards-incompatible

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

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.

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.

#145770 In rust-lang/rust;

· cramertj opened on Aug 22, 2025

rustc output no longer reproducible if it crashes

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

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

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

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.

Status: Open.

#145424 In rust-lang/rust;

· matthiaskrgr opened on Aug 15, 2025

False positive regression for <code>unused_crate_dependencies</code>

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.

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

L-unused_crate_dependenciesLint: unused_crate_dependenciesLint: unused_crate_dependencies

P-mediumMedium priorityMedium 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.

#147069 In rust-lang/rust;

· robertbastian opened on Sep 26, 2025

Duplicate warning on some attributes with wrong targets

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

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

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

P-mediumMedium priorityMedium 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.

#147417 In rust-lang/rust;

· JonathanBrouwer opened on Oct 6, 2025

regression: the method <code>as_ref</code> exists for reference

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

I-types-nominatedNominated for discussion during a types team meeting.Nominated for discussion during a types team meeting.

P-highHigh priorityHigh priority

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

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

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-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.

#147964 In rust-lang/rust;

· BoxyUwU opened on Oct 22, 2025

regression: this method takes two arguments (due to partial stabilization of <code>bigint_helper_methods</code>)

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

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

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.

#147965 In rust-lang/rust;

· BoxyUwU opened on Oct 22, 2025

regression: ICE no resolution found for import

A-resolveArea: Name/path resolution done by `rustc_resolve` specificallyArea: Name/path resolution done by `rustc_resolve` specifically

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

E-needs-investigationCall for partcipation: This issues needs some investigation to determine current statusCall for partcipation: This issues needs some investigation to determine current status

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

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

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.

#147966 In rust-lang/rust;

· BoxyUwU opened on Oct 22, 2025

regression: overflow evaluating the requirement

A-trait-systemArea: Trait systemArea: Trait system

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

E-needs-bisectionCall for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustcCall for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc

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-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.

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.

#147967 In rust-lang/rust;

· BoxyUwU opened on Oct 22, 2025

regression: malformed should_panic attribute input (accepted breakage; might need more downstream patches)

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

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

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.

#147969 In rust-lang/rust;

· BoxyUwU opened on Oct 22, 2025

regression: hashmap macro stuff

A-macrosArea: All kinds of macros (custom derive, macro_rules!, proc macros, ..)Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..)

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

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.

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.

#147971 In rust-lang/rust;

· BoxyUwU opened on Oct 22, 2025

regression: ICE all spans must be disjoint

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.

A-macrosArea: All kinds of macros (custom derive, macro_rules!, proc macros, ..)Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..)

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

E-needs-bisectionCall for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustcCall for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc

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

L-for_loops_over_falliblesLint: for_loops_over_falliblesLint: for_loops_over_fallibles

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.

P-highHigh priorityHigh priority

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

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

Status: Open.

#147973 In rust-lang/rust;

· BoxyUwU opened on Oct 22, 2025

regression: queries overflowed the depth limit

A-async-awaitArea: Async & AwaitArea: Async & Await

A-monomorphizationArea: MonomorphizationArea: Monomorphization

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

P-highHigh priorityHigh priority

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

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

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.

#147976 In rust-lang/rust;

· BoxyUwU opened on Oct 22, 2025

regression: cannot find type SourceFile in crate proc_macro

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

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.

#147980 In rust-lang/rust;

· BoxyUwU opened on Oct 22, 2025

regression: ICE no resolution for ...

A-intra-doc-linksArea: Intra-doc links, the ability to link to items in docs by nameArea: Intra-doc links, the ability to link to items in docs by name

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) ❄️

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

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

S-has-bisectionStatus: A bisection has been found for this issueStatus: A bisection has been found for this issue

S-has-mcveStatus: A Minimal Complete and Verifiable Example has been found for this issueStatus: A Minimal Complete and Verifiable Example has been found for this issue

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.

#147981 In rust-lang/rust;

· BoxyUwU opened on Oct 22, 2025

regression: link kind ... is only supported on ... targets

A-linkageArea: linking into static, shared libraries and binariesArea: linking into static, shared libraries and binaries

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

P-lowLow priorityLow priority

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

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.

#147982 In rust-lang/rust;

· BoxyUwU opened on Oct 22, 2025