---
# System prepended metadata

title: Libs Meeting 2021-03-10
tags: [Minutes, Libs Meetings]

---

# Libs Meeting 2021-03-10

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

**Attendees**: JoshTriplett, bstrie, sfackler, Amanieu, Mara

## Agenda

- [Open action items](https://hackmd.io/ovrbJj6CRduRgSA0Wzg2zg)
- Triage
- Anything else?

## Triage

### FCPs

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

  - [[close 78204](https://github.com/rust-lang/rust/issues/78204#issuecomment-792532562)] *impl&lt;A, B&gt; IntoIterator for (A, B) as Zip* - (3 checkboxes left)
  - [[merge 81050](https://github.com/rust-lang/rust/issues/81050#issuecomment-765341798)] *Stabilize core::task::ready!* - (2 checkboxes left)
  - [[merge 77704](https://github.com/rust-lang/rust/issues/77704#issuecomment-760056634)] *Implement indexing slices with pairs of core::ops::Bound&lt;usize&gt;* - (2 checkboxes left)
</details>
<p></p>

[Amanieu (1)](https://rfcbot.rs/fcp/Amanieu), [BurntSushi (3)](https://rfcbot.rs/fcp/BurntSushi), [KodrAus (1)](https://rfcbot.rs/fcp/KodrAus), [dtolnay (0)](https://rfcbot.rs/fcp/dtolnay), [joshtriplett (0)](https://rfcbot.rs/fcp/joshtriplett), [m-ou-se (1)](https://rfcbot.rs/fcp/m-ou-se), [sfackler (1)](https://rfcbot.rs/fcp/sfackler)

### Nominated

- [2 `rust-lang/rfcs` items](https://github.com/rust-lang/rfcs/issues?q=is%3Aopen+label%3AT-libs+label%3AI-nominated)
  - [[2979](https://github.com/rust-lang/rfcs/pull/2979)] *\[RFC\]: Libs Team Governance*
  - [[3090](https://github.com/rust-lang/rfcs/pull/3090)] *A new prelude for the 2021 edition*
- [4 `rust-lang/rust` items](https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AT-libs+label%3AI-nominated)
  - [[54140](https://github.com/rust-lang/rust/issues/54140)] *Tracking Issue: Procedural Macro Diagnostics (RFC 1566)*
  - [[80149](https://github.com/rust-lang/rust/pull/80149)] *Use getrandom for generating HashMap seed*
  - [[80823](https://github.com/rust-lang/rust/pull/80823)] *Add Cow::to\_borrow\_if() and Cow::to\_borrow\_if\_eq()*
  - [[82665](https://github.com/rust-lang/rust/issues/82665)] *regression: AsRef inference breakage*

### 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)
- [3 `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)*
  - [[80771](https://github.com/rust-lang/rust/pull/80771)] *Make NonNull::as\_ref (and friends) return refs with unbound lifetimes*
  - [[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*
      - Tenatitvely, change Windows to match Unix's behavior, standardize on Unix behavior on all platforms (setting `current_dir` affects relative executable paths)
  - [[42412](https://github.com/rust-lang/rust/issues/42412)] *Incorporate @raphlinus' container cheat sheet into the std::collections module docs*
  - [[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*
      - We should make the docs less prescriptive about "single underlying write", Ok(0) usually means "at capacity", but an error should be preferred.
  - [[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*
      - FCP to merge

## Actions

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

