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Outlives requirements are not implied in the return type of <code>async fn</code>, and generally for RPIT

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

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-implied-boundsArea: Implied bounds / inferred outlives-boundsArea: Implied bounds / inferred outlives-bounds

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.

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

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.

#130935 In rust-lang/rust;

· jackh726 opened on Sep 27, 2024

async code fails to compile with <code>-Znext-solver</code>

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

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.

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

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.

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.

WG-trait-system-refactorThe Rustc Trait System Refactor Initiative (-Znext-solver)The Rustc Trait System Refactor Initiative (-Znext-solver)

Status: Open.

#129865 In rust-lang/rust;

· 0xdeafbeef opened on Sep 1, 2024

#[inline(never)] does not work for async functions

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

A-codegenArea: Code generationArea: Code generation

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.

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.

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

disposition-mergeThis issue / PR is in PFCP or FCP with a disposition to merge it.This issue / PR is in PFCP or FCP with a disposition to merge it.

finished-final-comment-periodThe final comment period is finished for this PR / Issue.The final comment period is finished for this PR / 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-langRelevant to the language teamRelevant to the language team

Status: Open.

#129347 In rust-lang/rust;

· michaelwoerister opened on Aug 21, 2024

Misleading help suggests <code>Sync</code> bound when shareable reference is passed across or into await

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.

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.

#129105 In rust-lang/rust;

· mzabaluev opened on Aug 14, 2024

rustc fails to prove <code>Send</code>ness for an <code>async</code> block where a <code>!Send</code> value is dropped before an <code>.await</code> point

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

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.

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

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

Status: Open.

#128095 In rust-lang/rust;

· frank-king opened on Jul 23, 2024

Async code causes error "implementation of <code>FnOnce</code> is not general enough" when demanding an <code>impl Send</code>

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.

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.

#126551 In rust-lang/rust;

· theemathas opened on Jun 16, 2024

Extremely un-informative error when a future that capture the environment is used as Send

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.

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.

#126550 In rust-lang/rust;

· Ciel-MC opened on Jun 16, 2024

Tracking Issue for async drop codegen

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

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.

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

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

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-langRelevant to the language teamRelevant to the language team

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

Status: Open.

#126482 In rust-lang/rust;

· zetanumbers opened on Jun 14, 2024

<code>async_closure</code>: error: implementation of <code>AsyncFnOnce</code> is not general enough

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

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.

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

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.

#126350 In rust-lang/rust;

· Jacherr opened on Jun 12, 2024

Bug when using <code>.flatten()</code> method that has <code>Item = &amp;'a T</code> when calling async function inside loop

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

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

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

A-trait-systemArea: Trait systemArea: Trait system

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.

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

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

Status: Open.

#126044 In rust-lang/rust;

· p0lunin opened on Jun 5, 2024

Poor interaction between NLL-borrowck, async, and c_variadic's <code>...</code> desugaring (<code>VaListImpl&lt;'_&gt;</code>)

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

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.

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

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.

#125431 In rust-lang/rust;

· nnethercote opened on May 23, 2024

Weird type inference around impl Trait and async

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

A-inferenceArea: Type inferenceArea: Type inference

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.

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

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.

#124757 In rust-lang/rust;

· Pzixel opened on May 5, 2024