Const closures

[fee1-dead]

cc #106003

[rustbot]

r? @lcnr

(rustbot has picked a reviewer for you, use r? to override)

[lcnr]

r? @oli-obk

[rustbot]

Some changes occurred in src/tools/rustfmt

cc @rust-lang/rustfmt

Hey! It looks like you've submitted a new PR for the library teams!

If this PR contains changes to any rust-lang/rust public library APIs then please comment with @rustbot label +T-libs-api -T-libs to tag it appropriately. If this PR contains changes to any unstable APIs please edit the PR description to add a link to the relevant API Change Proposal or create one if you haven't already. If you're unsure where your change falls no worries, just leave it as is and the reviewer will take a look and make a decision to forward on if necessary.

Examples of T-libs-api changes:

• Stabilizing library features
• Introducing insta-stable changes such as new implementations of existing stable traits on existing stable types
• Introducing new or changing existing unstable library APIs (excluding permanently unstable features / features without a tracking issue)
• Changing public documentation in ways that create new stability guarantees
• Changing observable runtime behavior of library APIs

[bors]

☔ The latest upstream changes (presumably #106210) made this pull request unmergeable. Please resolve the merge conflicts.

[oli-obk]

This impl lgtm and does not unduely complicate my effects generics PR, so r=me after a rebase

[fee1-dead]

@bors r=oli-obk

[bors]

📌 Commit adcea57190451565345b19f58da3cf9e024b79bd has been approved by oli-obk

It is now in the queue for this repository.

[dtolnay]

This needs to be rebased past #106458 because it is showing not mergeable in bors.

@bors r-
@rustbot author

[fee1-dead]

@bors r=oli-obk

[bors]

📌 Commit ca1eb43 has been approved by oli-obk

It is now in the queue for this repository.

[fee1-dead]

@bors r-

[oli-obk]

@bors r+

[bors]

📌 Commit 42a50ba has been approved by oli-obk

It is now in the queue for this repository.

[klensy]

Link to #106003 in description would be nice.

[bors]

⌛ Testing commit 42a50ba with merge 279f1c9...

[bors]

☀️ Test successful - checks-actions
Approved by: oli-obk
Pushing 279f1c9 to master...

[rust-timer]

Finished benchmarking commit (279f1c9): comparison URL.

Overall result: ❌ regressions - no action needed

@rustbot label: -perf-regression

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	0.9%	[0.2%, 1.6%]	2
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	3.3%	[3.3%, 3.3%]	1
Regressions ❌ (secondary)	1.6%	[1.1%, 2.1%]	2
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-1.7%	[-1.7%, -1.7%]	2
All ❌✅ (primary)	3.3%	[3.3%, 3.3%]	1

Cycles

This benchmark run did not return any relevant results for this metric.