---
title: "WG-async triage meeting 2024-02-26"
tags: ["WG-async", "triage-meeting", "minutes"]
date: 2024-02-26
discussion: https://rust-lang.zulipchat.com/#narrow/stream/187312-wg-async/topic/Triage.20meeting.202024-02-26
url: https://hackmd.io/E9QWuOjTQTmeVv58_aPPRQ
---

# WG-async meeting agenda

- Meeting date: 2024-02-26

## Attendance

- People: TC, eholk, CE, Daria

## Meeting roles

- Minutes: TC

## Scheduled meetings

- 2024-02-29: "Discuss async portability" [#334](https://github.com/rust-lang/wg-async/issues/334)

Update these [here](https://github.com/orgs/rust-lang/projects/40/views/1).

## Proposed meetings

None.

Update these [here](https://github.com/orgs/rust-lang/projects/40/views/1).

## Announcements or custom items

(Meeting attendees, feel free to add items here!)

## Untriaged issues

### "Bad error message using shared borrow of non-sync type across await point" rust#71010

**Link:** https://github.com/rust-lang/rust/issues/71010

(We triaged this and commented on the issue.)

### "Poor error message when spawning a future returned by an async fn that takes an owned value as reference" rust#81096

**Link:** https://github.com/rust-lang/rust/issues/81096

(We triaged this and commented on the issue.)

### "Function works but non-capturing closure with identical signature fails with strange error" rust#81326

**Link:** https://github.com/rust-lang/rust/issues/81326

CE: Found an ICE looking into this:

#![feature(closure_lifetime_binder)]
#![feature(async_closure)]

use std::future::Future;

async fn f(arg: &i32) {
}

async fn func<F>(f: F)
where
    F: async for<'a> Fn(&'a i32)
{
    let x: i32 = 0;
    f(&x).await;
}

fn main() {
    // works
    func(f);
    // fails
    func(|a: &i32| { f(a) });
    // should work
    func(async |a: &i32| { f(a).await });
}

(We triaged this and commented on the issue.)

### "`implementation of Debug is not general enough` when making async block into `&dyn Future + Send`" rust#87425

**Link:** https://github.com/rust-lang/rust/issues/87425

(We triaged this and commented on the issue.)

### "Confusing interaction between associated types, `async fn` and `impl Future`" rust#89657

**Link:** https://github.com/rust-lang/rust/issues/89657

(We triaged this and commented on the issue.)

### "Unexpected "the parameter type X may not live long enough" error in asynchronous functions" rust#95719

**Link:** https://github.com/rust-lang/rust/issues/95719

(We triaged this and commented on the issue.)

### "Tracking Issue for `waker_getters`" rust#96992

**Link:** https://github.com/rust-lang/rust/issues/96992

(This has finished FCP. We marked this as triaged.)

### "Implementation of FnOnce is not general enough for `Flatten` iterator of futures outliving an .await point" rust#98380

**Link:** https://github.com/rust-lang/rust/issues/98380

(We triaged this and commented on the issue.)

### "async blocks can't forward references" rust#100406

**Link:** https://github.com/rust-lang/rust/issues/100406

(We triaged this and commented on the issue.)

### "Tracking Issue for `const_waker`" rust#102012

**Link:** https://github.com/rust-lang/rust/issues/102012

(This is in proposed T-libs-api FCP. We marked this as triaged.)

### "Mut borrow persists after await" rust#106688

**Link:** https://github.com/rust-lang/rust/issues/106688

(We triaged this and commented on the issue.)

### "`async_fn_in_trait` and `return_type_notation` cause awkward awaits" rust#112569

**Link:** https://github.com/rust-lang/rust/issues/112569

(We triaged this and commented on the issue.)

### "Non-Send values that are assigned to a variable but not used across an await point incorrectly mark the entire Future as non-Send" rust#116680

**Link:** https://github.com/rust-lang/rust/issues/116680

(We triaged this and commented on the issue.)

### "rustc cannot infer Send for async block consistently with drop and braces" rust#118604

**Link:** https://github.com/rust-lang/rust/issues/118604

(We triaged this and commented on the issue.)

### "ICE with "failed to resolve instance for <... as IntoFuture>::into_future: Ok(None)" (regression between 1.73 and 1.74)" rust#119095

**Link:** https://github.com/rust-lang/rust/issues/119095

(We triaged this and commented on the issue.)

### "Clarification needed on what happens when `Future::poll` wakes an old waker" rust#119698

**Link:** https://github.com/rust-lang/rust/issues/119698

(We triaged this, commented on the issue, and nominated it for ourselves.)

### "Cycle detected in async fn but not with -> impl Future" rust#119727

**Link:** https://github.com/rust-lang/rust/issues/119727

(We triaged this and commented on the issue.)

### "never patterns: `!` argument not detected as diverging on async fn" rust#120240

**Link:** https://github.com/rust-lang/rust/issues/120240

(We triaged this and commented on the issue.)

### "Value is incorrectly considered to be borrowed accross await points" rust#120442

**Link:** https://github.com/rust-lang/rust/issues/120442

(We triaged this and commented on the issue.)

### "ICE: `ConstContext::Maybe must have host effect param` during `mir_const_qualif`" rust#120503

**Link:** https://github.com/rust-lang/rust/issues/120503

(We triaged this and commented on the issue.)

### "Async callback argument causes nonsensical error message." rust#121093

**Link:** https://github.com/rust-lang/rust/issues/121093

(We triaged this and commented on the issue.)

### "Add LocalWaker support" libs-team#191

**Link:** https://github.com/rust-lang/libs-team/issues/191

(This one, being in libs, we can't mark as triaged, but it is.)

(The meeting ended here.)

## Nominated RFCs, PRs, and issues

### "Tracking Issue for `waker_getters`" rust#96992

**Link:** https://github.com/rust-lang/rust/issues/96992

### "Tracking Issue for `task::Waker::noop`" rust#98286

**Link:** https://github.com/rust-lang/rust/issues/98286

### "Tracking Issue for `Ready::into_inner()`" rust#101196

**Link:** https://github.com/rust-lang/rust/issues/101196

### "Tracking Issue for `const_waker`" rust#102012

**Link:** https://github.com/rust-lang/rust/issues/102012

### "Rename `AsyncIterator` back to `Stream`, introduce an AFIT-based `AsyncIterator` trait" rust#119550

**Link:** https://github.com/rust-lang/rust/pull/119550

### "Add LocalWaker support" libs-team#191

**Link:** https://github.com/rust-lang/libs-team/issues/191

## WG RFCs, PRs, and issues nominated for T-lang/T-types

### "`.await` does not perform autoref or autoderef" rust#111546

**Link:** https://github.com/rust-lang/rust/issues/111546

## Pending PRs on the WG-async repo

None.

## `S-waiting-on-team`

### "Rename `AsyncIterator` back to `Stream`, introduce an AFIT-based `AsyncIterator` trait" rust#119550

**Link:** https://github.com/rust-lang/rust/pull/119550

## Proposed FCPs

**Check your boxes!**

### "Tracking Issue for `Ready::into_inner()`" rust#101196

**Link:** https://github.com/rust-lang/rust/issues/101196

### "Tracking Issue for `const_waker`" rust#102012

**Link:** https://github.com/rust-lang/rust/issues/102012

## Active FCPs

None.

## P-critical issues

None.

## WG-async work project board

https://github.com/orgs/rust-lang/projects/29/views1/d