---
# System prepended metadata

title: Libs Meeting 2021-03-24
tags: [Minutes, Libs Meetings]

---

# Libs Meeting 2021-03-24

###### tags: `Libs Meetings` `Minutes`

**Attendees**: Amanieu, Josh Triplett, bstrie, Mara

## Agenda

- Finalize meeting time based on Doodle poll
    - Decision: keep the previous meeting time, bind it to a time zone that follows DST
- [Open action items](https://hackmd.io/ovrbJj6CRduRgSA0Wzg2zg)
- Triage
- Review all unstable standard library features and decide on a direction.
    - https://github.com/rust-lang/libs-team/projects/2
        - Somewhat outdated and manual
    - https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AC-tracking-issue+label%3AT-libs+sort%3Acreated-asc
    - Automatically scrape feature names and tracking issue numbers out of the rust-lang/rust source?
- Review error handling blog post: https://github.com/rust-lang/blog.rust-lang.org/pull/799
- Anything else?

## Triage

### FCPs

2 open T-libs FCPs:
<details><summary><a href="https://github.com/rust-lang/rfcs/issues?q=is%3Aopen+label%3AT-libs+label%3Aproposed-final-comment-period">1 <code>rust-lang/rfcs</code> FCPs</a></summary>

  - [[merge 2509](https://github.com/rust-lang/rfcs/issues/2509#issuecomment-801294327)] *RFC: Introduce \`concat\_bytes!()\` to join \`\[u8\]\` and byte \`str\` analogous to \`concat!\` for \`str\`* - (2 checkboxes left)
</details>
<details><summary><a href="https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AT-libs+label%3Aproposed-final-comment-period">1 <code>rust-lang/rust</code> FCPs</a></summary>

  - [[merge 81050](https://github.com/rust-lang/rust/issues/81050#issuecomment-765341798)] *Stabilize core::task::ready!* - (1 checkboxes left)
</details>
<p></p>

[Amanieu (0)](https://rfcbot.rs/fcp/Amanieu), [BurntSushi (0)](https://rfcbot.rs/fcp/BurntSushi), [KodrAus (0)](https://rfcbot.rs/fcp/KodrAus), [dtolnay (0)](https://rfcbot.rs/fcp/dtolnay), [joshtriplett (0)](https://rfcbot.rs/fcp/joshtriplett), [m-ou-se (2)](https://rfcbot.rs/fcp/m-ou-se), [sfackler (1)](https://rfcbot.rs/fcp/sfackler)

### Nominated

- [0 `rust-lang/rfcs` items](https://github.com/rust-lang/rfcs/issues?q=is%3Aopen+label%3AT-libs+label%3AI-nominated)
- [1 `rust-lang/rust` items](https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AT-libs+label%3AI-nominated)
  - [[83167](https://github.com/rust-lang/rust/issues/83167)] *Use const generics for stdarch intrinsics*

### Waiting on team

- [0 `rust-lang/rfcs` items](https://github.com/rust-lang/rfcs/issues?q=is%3Aopen+label%3AT-libs+label%3AS-waiting-on-team)
- [2 `rust-lang/rust` items](https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AT-libs+label%3AS-waiting-on-team)
  - [[76901](https://github.com/rust-lang/rust/pull/76901)] *Implement RFC 2500 Needle API (Part 1)*
    - None of us have a lot of context here. People involved in this RFC have left.
    - Should we postpone until we have a champion who wants to do design work?
    - Would this get substantially simpler if it didn't try to support regexes, only string-like things?
  - [[81989](https://github.com/rust-lang/rust/pull/81989)] *Add doc aliases for python and Java collections*

### Needs decision

- [8 `rust-lang/rust` items](https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AT-libs+label%3AI-needs-decision)
  - [[25053](https://github.com/rust-lang/rust/issues/25053)] *UnsafeCell should implement the Copy trait*
  - [[26951](https://github.com/rust-lang/rust/issues/26951)] *Abort on some large allocation requests, Panic on other*
  - [[29494](https://github.com/rust-lang/rust/issues/29494)] *Command does not escape arguments as expected on windows*
  - [[37868](https://github.com/rust-lang/rust/issues/37868)] *std::process::Command's current\_dir behaves differently on Unix and Windows, with respect to relative exe paths*
  - [[56889](https://github.com/rust-lang/rust/issues/56889)] *Write::write\_all erroring when encountering Ok(0) interacts poorly with the contract of Write::write*
  - [[59878](https://github.com/rust-lang/rust/issues/59878)] *Box\<\[T\]\> should have an IntoIter implementation.*
  - [[62726](https://github.com/rust-lang/rust/issues/62726)] *Tracking issue for io\_slice\_advance*
  - [[82974](https://github.com/rust-lang/rust/pull/82974)] *Improve display of Unix wait statuses, notably giving names for signals*

## Actions

- [ ] Reply to all issues/PRs discussed in this meeting, or add them to the [open action items](https://hackmd.io/ovrbJj6CRduRgSA0Wzg2zg).