---
# System prepended metadata

title: Libs Meeting 2021-05-26
tags: [Minutes, Libs Meetings]

---

# Libs Meeting 2021-05-26

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

**Attendees**: Jane, David, Josh, bstrie, Mara

## Agenda

- [Open action items](https://hackmd.io/ovrbJj6CRduRgSA0Wzg2zg)
- Charter - libs/libs-api/libs-contributors split
  - Weekly api meetings still useful?
    - Yes, let's go through RFCs.
  - Start separate non-api meetings?
    - start asap
- What requires an RFC?
  - writing an RFC is a bit of a barrier
    - Library-specific RFC template?
    - 'MCP's for api changes/additions?
    - use issues on the rfcs repo for this?
    - watch internals forum more closely?
      - josh already doing this
- Anything else?
  - error report format
    - rely on methods rather than format specifiers for customizing output
- Triage

## Triage

### FCPs

8 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">7 <code>rust-lang/rust</code> FCPs</a></summary>

  - [[merge 81050](https://github.com/rust-lang/rust/issues/81050#issuecomment-765341798)] *Stabilize core::task::ready!* - (0 checkboxes left)
  - [[merge 85272](https://github.com/rust-lang/rust/issues/85272#issuecomment-842222445)] *Allow leading pipe in \`matches!()\` patterns.* - (1 checkboxes left)
  - [[merge 84111](https://github.com/rust-lang/rust/issues/84111#issuecomment-818005366)] *Stabilize \`impl From&lt;\[(K, V); N\]&gt; for HashMap\` (and friends)* - (1 checkboxes left)
  - [[merge 84640](https://github.com/rust-lang/rust/issues/84640#issuecomment-829631948)] *Implement \`TryFrom&lt;char&gt;\` for \`u8\`* - (1 checkboxes left)
  - [[merge 80690](https://github.com/rust-lang/rust/issues/80690#issuecomment-846481791)] *Tracking Issue for BufWriter::into\_raw\_parts* - (4 checkboxes left)
  - [[merge 79704](https://github.com/rust-lang/rust/issues/79704#issuecomment-846481826)] *Tracking Issue for IntoInnerError::into\_parts etc. (io\_into\_inner\_error\_parts)* - (4 checkboxes left)
  - [[merge 75196](https://github.com/rust-lang/rust/issues/75196#issuecomment-847624934)] *Tracking Issue for const \`core::str::from\_utf8\_unchecked\`* - (6 checkboxes left)
</details>
<p></p>

[Amanieu (1)](https://rfcbot.rs/fcp/Amanieu), [BurntSushi (1)](https://rfcbot.rs/fcp/BurntSushi), [dtolnay (1)](https://rfcbot.rs/fcp/dtolnay), [joshtriplett (4)](https://rfcbot.rs/fcp/joshtriplett), [m-ou-se (4)](https://rfcbot.rs/fcp/m-ou-se), [sfackler (5)](https://rfcbot.rs/fcp/sfackler), [yaahc (3)](https://rfcbot.rs/fcp/yaahc)

### Nominated

- [0 `rust-lang/rfcs` items](https://github.com/rust-lang/rfcs/issues?q=is%3Aopen+label%3AT-libs+label%3AI-nominated)
- [0 `rust-lang/rust` items](https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AT-libs+label%3AI-nominated)

### 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)
- [4 `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)*
  - [[79965](https://github.com/rust-lang/rust/pull/79965)] *More ErrorKinds for common errnos*
    - Redefine Other to be 'user defined' only: that is, remove all uses from std.
  - [[84770](https://github.com/rust-lang/rust/pull/84770)] *Stabilize Bufwriter::into\_raw\_parts and IntoInnerError::into\_raw\_parts, ::into\_error*
  - [[85270](https://github.com/rust-lang/rust/pull/85270)] *When using \`process::Command\` on Windows, environment variable names must be case\-preserving but case\-insensitive*

### Needs decision

- [7 `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*

### Tracking issues

- [208 `rust-lang/rust` items](https://github.com/rust-lang/rust/issues?page=6&q=is%3Aopen+label%3AT-libs+label%3AC-tracking-issue+-label%3AB-RFC-approved+-label%3AE-needs-test+-label%3Afinished-final-comment-period+-label%3Afinal-comment-period+-label%3AI-needs-decision)

## Actions

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

_Generated by [fully-automatic-rust-libs-team-triage-meeting-agenda-generator](https://github.com/rust-lang/libs-team/tree/main/tools/agenda-generator)_
