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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

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

Non-implemented trait causes 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) ❄️

P-lowLow priority Low 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

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.

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).

#140462 In rust-lang/rust;

· by dpytaylo was closed on May 16, 2025

ICE: index out of bounds: the len is 0 but the index is 0

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

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

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

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

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).

#136940 In rust-lang/rust;

· by LennyPhoenix was closed on Feb 14, 2025

Nightly regressed igvm crate and now emits SIGILL at opt-level higher than 1

A-mir-optArea: MIR optimizations Area: MIR optimizations

A-mir-opt-GVNArea: MIR opt Global Value Numbering (GVN) Area: MIR opt Global Value Numbering (GVN)

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

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

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

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

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

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).

#136361 In rust-lang/rust;

· by durin42 was closed on Feb 7, 2025

ICE: rustc_hir_typeck: index out of bounds

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) ❄️

S-bug-has-testStatus: This bug is tracked inside the repo by a `known-bug` test. Status: This bug is tracked inside the repo by a `known-bug` test.

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

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.

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).

#135124 In rust-lang/rust;

· by matthiaskrgr was closed on Feb 4, 2025

Double Drop with #![deny(rust_2024_compatibility)]

A-edition-2024Area: The 2024 edition Area: The 2024 edition

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

L-tail_expr_drop_orderLint: tail_expr_drop_order Lint: tail_expr_drop_order

P-criticalCritical priority Critical 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

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).

#134482 In rust-lang/rust;

· by Clipi-12 was closed on Dec 19, 2024

ICE: <code>node_type: no type for node HirId</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) ❄️

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

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).

#132517 In rust-lang/rust;

· by matthiaskrgr was closed on Nov 3, 2024

Shorthand projections inside RPITITs fail to resolve

A-associated-itemsArea: Associated items (types, constants & functions) Area: Associated items (types, constants & functions)

A-type-systemArea: Type system Area: Type system

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

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

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

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.

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).

#132372 In rust-lang/rust;

· by Vollbrecht was closed on Oct 31, 2024