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Universe errors involving an opaque type results in hallucinations and unused bound vars

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

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

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

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

AsyncAwait-TriagedAsync-await issues that have been triaged during a working group meeting.Async-await issues that have been triaged during a working group meeting.

D-confusingDiagnostics: Confusing error or lint that should be reworked.Diagnostics: Confusing error or lint that should be reworked.

fixed-by-async-closuresFixed by `#![feature(async_closure)]`Fixed by `#![feature(async_closure)]`

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.

#124472 In rust-lang/rust;

· WaffleLapkin opened on Apr 28, 2024

Strange error message when trying to call a function that takes a closure that returns a future

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

A-closuresArea: Closures (`|…| { … }`)Area: Closures (`|…| { … }`)

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

AsyncAwait-TriagedAsync-await issues that have been triaged during a working group meeting.Async-await issues that have been triaged during a working group meeting.

fixed-by-async-closuresFixed by `#![feature(async_closure)]`Fixed by `#![feature(async_closure)]`

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-asyncWorking group: Async & awaitWorking group: Async & await

Status: Open.

#123717 In rust-lang/rust;

· tljubej-tbtl opened on Apr 10, 2024

Async callback argument causes nonsensical error message.

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

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

AsyncAwait-TriagedAsync-await issues that have been triaged during a working group meeting.Async-await issues that have been triaged during a working group meeting.

D-confusingDiagnostics: Confusing error or lint that should be reworked.Diagnostics: Confusing error or lint that should be reworked.

fixed-by-async-closuresFixed by `#![feature(async_closure)]`Fixed by `#![feature(async_closure)]`

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-asyncWorking group: Async & awaitWorking group: Async & await

WG-diagnosticsWorking group: DiagnosticsWorking group: Diagnostics

Status: Open.

#121093 In rust-lang/rust;

· theemathas opened on Feb 14, 2024

Confusing error <code>captured variable cannot escape FnMut closure body</code> caused by unnecessary move closure

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

D-confusingDiagnostics: Confusing error or lint that should be reworked.Diagnostics: Confusing error or lint that should be reworked.

D-newcomer-roadblockDiagnostics: Confusing error or lint; hard to understand for new users.Diagnostics: Confusing error or lint; hard to understand for new users.

fixed-by-async-closuresFixed by `#![feature(async_closure)]`Fixed by `#![feature(async_closure)]`

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.

#119733 In rust-lang/rust;

· tjallingt opened on Jan 8, 2024

async/await: cannot move out of captured variable in an <code>Fn</code> closure

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

A-closuresArea: Closures (`|…| { … }`)Area: Closures (`|…| { … }`)

AsyncAwait-TriagedAsync-await issues that have been triaged during a working group meeting.Async-await issues that have been triaged during a working group meeting.

fixed-by-async-closuresFixed by `#![feature(async_closure)]`Fixed by `#![feature(async_closure)]`

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

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.

#59971 In rust-lang/rust;

· leinlawun opened on Apr 14, 2019