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ICE has escaping bound vars, so it cannot be wrapped in a dummy binder.

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) ❄️

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: Closed (completed).

#145652 In rust-lang/rust;

· by dannywillems was closed on Aug 22, 2025

<code>trait Sub: const Super</code> has unusable <code>dyn</code>

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

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

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: Closed (completed).

#145198 In rust-lang/rust;

· by theemathas was closed on Aug 21, 2025

Latest rustc tags <code>unused_imports</code> on trait imports spuriously

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-unused_importsLint: unused_imports Lint: unused_imports

P-highHigh priority High priority

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: Closed (completed).

#145185 In rust-lang/rust;

· by TheBlueMatt was closed on Aug 25, 2025

E0275 is occuring in beta 1.90.0-beta.1 but not in stable 1.89.0

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

P-highHigh priority High priority

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 issue Status: 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.

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: Closed (completed).

#145151 In rust-lang/rust;

· by anatawa12 was closed on Aug 21, 2025

Tail calls don't enforce lifetime constraints from return type onto args

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

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

I-unsoundIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness

requires-nightlyThis issue requires a nightly compiler in some way. This issue requires a nightly compiler in some way.

Status: Closed (completed).

#144916 In rust-lang/rust;

· by compiler-errors was closed on Aug 7, 2025

Explicit tail call returning a HRTB causes ICE: "hir typeck should have checked the return type already"

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

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

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

requires-incomplete-featuresThis issue requires the use of incomplete features. This issue requires the use of incomplete features.

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: Closed (completed).

#144892 In rust-lang/rust;

· by theemathas was closed on Aug 21, 2025

Can't explicit tail call with HRTB argument

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

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

requires-incomplete-featuresThis issue requires the use of incomplete features. This issue requires the use of incomplete features.

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: Closed (completed).

#144826 In rust-lang/rust;

· by theemathas was closed on Aug 7, 2025

[ICE][ICE-&gt;Error] Explicit naming of parameter leads to ICE

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) ❄️

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: Closed (completed).

#144608 In rust-lang/rust;

· by miki4625 was closed on Jul 30, 2025

ICE: <code>entered unreachable code: parse_dot_or_call_expr_with_ shouldn't produce this</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) ❄️

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: Closed (completed).

#144527 In rust-lang/rust;

· by cushionbadak was closed on Jul 29, 2025

Coroutine upvars are not required to be live in borrowck if witness has no drop requirements

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

A-borrow-checkerArea: The borrow checker Area: The borrow checker

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

I-unsoundIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness

P-criticalCritical priority Critical priority

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

Status: Closed (completed).

#144155 In rust-lang/rust;

· by compiler-errors was closed on Aug 11, 2025

We don't perform sized elaboration for impl-Trait-in-bindings (trait ascription)

A-impl-traitArea: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch. Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch.

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

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

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: Closed (completed).

#144135 In rust-lang/rust;

· by fmease was closed on Jul 20, 2025

cycle detected when optimizing MIR

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

I-cycleIssue: A query cycle occurred while none was expected Issue: A query cycle occurred while none was expected

regression-from-stable-to-nightlyPerformance or correctness regression from stable to nightly. Performance or correctness regression from stable to nightly.

S-has-mcveStatus: A Minimal Complete and Verifiable Example has been found for this issue Status: 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: Closed (completed).

#143700 In rust-lang/rust;

· by estebank was closed on Jul 19, 2025