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ICE: <code>encountered a fresh type during canonicalization</code>

A-dyn-traitArea: trait objects, vtable layout Area: trait objects, vtable layout

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

E-needs-testCall for participation: An issue has been fixed and does not reproduce, but no test has been added. Call for participation: An issue has been fixed and does not reproduce, but no test has been added.

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) ❄️

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

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: Open.

#138891 In rust-lang/rust;

· matthiaskrgr opened on Mar 24, 2025

[bug] When I Use tauri-plugin-http and reqwest either, I got a panic

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

A-auto-traitsArea: auto traits (e.g., `auto trait Send {}`) Area: auto traits (e.g., `auto trait Send {}`)

A-coercionsArea: implicit and explicit `expr as Type` coercions Area: implicit and explicit `expr as Type` coercions

A-dyn-traitArea: trait objects, vtable layout Area: trait objects, vtable layout

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-mediumMedium priority Medium 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.

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: Open.

#138274 In rust-lang/rust;

· Wan9xy opened on Mar 9, 2025

Invalid suggestion for <code>AsyncFnOnce</code> trait object

A-async-closures`async || {}` `async || {}`

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

A-dyn-traitArea: trait objects, vtable layout Area: trait objects, vtable layout

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.

#134182 In rust-lang/rust;

· ehuss opened on Dec 11, 2024

projecting to assoc type of supertrait that is implemented differently for trait object goes wrong

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

A-dyn-traitArea: trait objects, vtable layout Area: trait objects, vtable layout

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

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

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.

#131891 In rust-lang/rust;

· lukas-code opened on Oct 18, 2024