Rollup of 16 pull requests #148851

Zalathar · 2025-11-12T01:26:45Z

Successful merges:

Simplify jemalloc setup #146627 (Simplify jemalloc setup)
Suggest add bounding value for RangeTo #147753 (Suggest add bounding value for RangeTo)
rustdoc: Don't pass RenderOptions to DocContext #147832 (rustdoc: Don't pass RenderOptions to DocContext)
Improve diagnostics for buffer reuse with borrowed references #147974 (Improve diagnostics for buffer reuse with borrowed references)
[rustdoc] Fix invalid jump to def macro link generation #148080 ([rustdoc] Fix invalid jump to def macro link generation)
Adjust spans into the for loops context before creating the new desugaring spans. #148465 (Adjust spans into the for loops context before creating the new desugaring spans.)
Update git index before running diff-index #148500 (Update git index before running diff-index)
rustc_target: introduce Abi, Env, Os #148531 (rustc_target: introduce Abi, Env, Os)
cmse: add test for async and const functions #148536 (cmse: add test for async and const functions)
implement feature(c_variadic_naked_functions) #148770 (implement feature(c_variadic_naked_functions))
fix filecheck typos in tests #148780 (fix filecheck typos in tests)
Remove specialized warning for removed target #148819 (Remove specialized warning for removed target)
miri subtree update #148830 (miri subtree update)
Update rustbook dependencies #148833 (Update rustbook dependencies)
fix(rustdoc): Color doctest errors #148834 (fix(rustdoc): Color doctest errors)
Remove more #[must_use] from portable-simd #148841 (Remove more #[must_use] from portable-simd)

r? @ghost
@rustbot modify labels: rollup

async functions are disallowed (because `-> impl Trait` is not supported). `const` entry functions are allowed, nonsecure-call functions must be function pointers, which cannot be evaluated during constant evaluation.

…to refcounted objects

epoll: unblock threads when new interest is registered

This updates the rust-version file to 8401398.

Pull recent changes from https://github.com/rust-lang/rust via Josh. Upstream ref: 8401398 Filtered ref: 9c097c092eaa8dd786fa7c138a3ecd67b4568d00 Upstream diff: rust-lang/rust@ceb7df7...8401398 This merge was created using https://github.com/rust-lang/josh-sync.

Automatic Rustup

…user-visible

epoll: do proper edge detection inside the epoll system

Co-authored-by: Tomasz Miąsko <tomasz.miasko@gmail.com>

It has been removed 9 months ago, which is more than a few months.

rust-timer · 2025-11-12T04:46:14Z

📌 Perf builds for each rolled up PR:

PR#	Message	Perf Build Sha
#146627	Simplify `jemalloc` setup	`d537e84520f91c06c14a8bfaad2edd601ff65287` (link)
#147753	Suggest add bounding value for RangeTo	`413aa7f6b259bf958ca8cad496721a2c27046b93` (link)
#147832	rustdoc: Don't pass `RenderOptions` to `DocContext`	`ec9c2895532eebe94f2bb1bc668c30bfd6513b3f` (link)
#147974	Improve diagnostics for buffer reuse with borrowed referenc…	`c9ec1aec82cbb2d56f609669c82b8f13c8eb546c` (link)
#148080	[rustdoc] Fix invalid jump to def macro link generation	`d67d57bf91fe81a91d26443cd0d3a88edd8de05a` (link)
#148465	Adjust spans into the `for` loops context before creating t…	`8668662c4597ebdcb9eb032d32f6ba6c9307a53f` (link)
#148500	Update git index before running diff-index	`6248f9d1748e44ec29b00094cbfed0e02b5e5251` (link)
#148531	rustc_target: introduce Abi, Env, Os	`3cf8e1a23db8c6b64009a94e8dfb438254693515` (link)
#148536	cmse: add test for `async` and `const` functions	`bf145171dcdc5c96093ebf5038d578ff68a9e610` (link)
#148770	implement `feature(c_variadic_naked_functions)`	`2572272cafc68f9d3cc65df7d16f4d58f8d21ad0` (link)
#148780	fix filecheck typos in tests	`3af353df8f9a663897ee7212fe59fae37e519ffe` (link)
#148819	Remove specialized warning for removed target	`27b63f2acdd2c0d8e0202165d892add73fb408f6` (link)
#148830	miri subtree update	`00a683eba523b32e911361745a35fb92397b3190` (link)
#148833	Update rustbook dependencies	`f6857a0170b21634ea2ecad267fbb75b03131b1c` (link)
#148834	fix(rustdoc): Color doctest errors	`ba8bdd7c06eec5358cc729bbb7241ec84cfc628e` (link)
#148841	Remove more `#[must_use]` from portable-simd	`91c202c737b8936ec974aa88336182084f9935af` (link)

previous master: 11339a0ef5

In the case of a perf regression, run the following command for each PR you suspect might be the cause: @rust-timer build $SHA

rust-timer · 2025-11-12T06:01:22Z

Finished benchmarking commit (0b329f8): comparison URL.

Overall result: ❌✅ regressions and improvements - please read the text below

Our benchmarks found a performance regression caused by this PR.
This might be an actual regression, but it can also be just noise.

Next Steps:

If the regression was expected or you think it can be justified,
please write a comment with sufficient written justification, and add
@rustbot label: +perf-regression-triaged to it, to mark the regression as triaged.
If you think that you know of a way to resolve the regression, try to create
a new PR with a fix for the regression.
If you do not understand the regression or you think that it is just noise,
you can ask the @rust-lang/wg-compiler-performance working group for help (members of this group
were already notified of this PR).

@rustbot label: +perf-regression
cc @rust-lang/wg-compiler-performance

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	2.1%	[1.1%, 3.5%]	20
Regressions ❌ (secondary)	1.4%	[0.2%, 2.8%]	25
Improvements ✅ (primary)	-3.0%	[-3.0%, -3.0%]	1
Improvements ✅ (secondary)	-0.4%	[-0.5%, -0.2%]	2
All ❌✅ (primary)	1.9%	[-3.0%, 3.5%]	21

Max RSS (memory usage)

Results (primary 0.9%, secondary -1.1%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	3.6%	[3.6%, 3.6%]	1
Regressions ❌ (secondary)	1.8%	[1.8%, 1.8%]	1
Improvements ✅ (primary)	-1.9%	[-1.9%, -1.9%]	1
Improvements ✅ (secondary)	-4.1%	[-4.1%, -4.1%]	1
All ❌✅ (primary)	0.9%	[-1.9%, 3.6%]	2

Cycles

Results (primary -0.2%, secondary 2.4%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	2.3%	[2.3%, 2.3%]	1
Regressions ❌ (secondary)	2.4%	[2.4%, 2.4%]	1
Improvements ✅ (primary)	-2.6%	[-2.6%, -2.6%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-0.2%	[-2.6%, 2.3%]	2

Binary size

Results (primary -0.1%, secondary -0.1%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-0.1%	[-1.1%, -0.0%]	67
Improvements ✅ (secondary)	-0.1%	[-0.3%, -0.0%]	22
All ❌✅ (primary)	-0.1%	[-1.1%, -0.0%]	67

Bootstrap: 476.512s -> 475.302s (-0.25%)
Artifact size: 391.37 MiB -> 391.07 MiB (-0.08%)

Zalathar · 2025-11-12T06:18:26Z

Oh wait, these are all doc profile regressions.

Zalathar · 2025-11-12T06:19:53Z

@rust-timer build d67d57b

[rustdoc] Fix invalid jump to def macro link generation #148080

Kobzol · 2025-11-12T07:08:45Z

@rust-timer build d67d57b

Zalathar · 2025-11-12T08:39:34Z

@rust-timer build ec9c289

rustdoc: Don't pass RenderOptions to DocContext #147832

Zalathar · 2025-11-12T10:22:33Z

@rust-timer build ba8bdd7

fix(rustdoc): Color doctest errors #148834

Zalathar · 2025-11-12T12:48:36Z

@rust-timer build 00a683e

miri subtree update #148830

Zalathar · 2025-11-13T03:39:40Z

None of the obvious candidates have reproduced the doc perf regression, so let's try some others.

@rust-timer build 3cf8e1a

rustc_target: introduce Abi, Env, Os #148531

Zalathar · 2025-11-13T05:23:56Z

@rust-timer build d537e84

Simplify jemalloc setup #146627

rust-timer · 2025-11-13T06:43:52Z

Finished benchmarking commit (d537e84): comparison URL.

Overall result: ❌✅ regressions and improvements - please read the text below

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	2.2%	[1.1%, 3.5%]	20
Regressions ❌ (secondary)	1.4%	[0.2%, 2.8%]	25
Improvements ✅ (primary)	-2.9%	[-2.9%, -2.9%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	1.9%	[-2.9%, 3.5%]	21

Max RSS (memory usage)

Results (primary 3.4%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	3.4%	[3.4%, 3.4%]	1
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	3.4%	[3.4%, 3.4%]	1

Cycles

Results (primary -2.7%, secondary -2.4%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-2.7%	[-2.7%, -2.7%]	1
Improvements ✅ (secondary)	-2.4%	[-2.4%, -2.4%]	1
All ❌✅ (primary)	-2.7%	[-2.7%, -2.7%]	1

Binary size

Results (primary -1.1%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

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

Bootstrap: 476.512s -> 475.767s (-0.16%)
Artifact size: 391.37 MiB -> 391.09 MiB (-0.07%)

JohnTitor and others added 30 commits October 22, 2025 21:11

Improve diagnostics for buffer reuse with borrowed references

61b26f9

cmse: add test for async and const functions

4e9dfb5

async functions are disallowed (because `-> impl Trait` is not supported). `const` entry functions are allowed, nonsecure-call functions must be function pointers, which cannot be evaluated during constant evaluation.

propagate function attributes in ast visitor

568c6ed

epoll: unblock threads when new interest is registered

1cff528

simplify epoll data structures: dont make the interests themselves in…

ac12e46

…to refcounted objects

add feature(c_variadic_naked_functions)

ebd173f

use feature(c_variadic_naked_functions) in tests

9129b90

Merge pull request rust-lang#4675 from RalfJung/epoll

69be846

epoll: unblock threads when new interest is registered

epoll: when an event disappears entirely, remove it from the ready list

047ee0a

epoll: do proper edge detection inside the epoll system

a8baf33

Prepare for merging from rust-lang/rust

6c6aa0f

This updates the rust-version file to 8401398.

fmt

e8aa88f

clippy

3c56919

Merge pull request rust-lang#4677 from rust-lang/rustup-2025-11-10

656fe2f

Automatic Rustup

eventfd: force spurious wakeups, matching Linux

4412a0a

fix EPOLL_CTL_MOD

7b4802d

make EpollInterestTable sorted to avoid linear scan

fc4748c

avoid using the address of an FD; now that we sort by that it may be …

fe6bc02

…user-visible

add the tokio poll_fns test that triggered this investigation

b340f08

Merge pull request rust-lang#4676 from RalfJung/epoll-edge

15299b7

epoll: do proper edge detection inside the epoll system

fix filecheck typos in tests

e611ef3

Update tests/codegen-llvm/deduced-param-attrs.rs

ecb0d3b

Co-authored-by: Tomasz Miąsko <tomasz.miasko@gmail.com>

Update git index before running diff-index

69da9af

Remove specialized warning for removed target

fcce61c

It has been removed 9 months ago, which is more than a few months.

Suggest add bounding value for RangeTo

0b45ab3

Fix invalid jump to def macro link generation

04f798b

Update jump to def macro link generation test

dacabcd

Add missing documentation

f4e1ffc

add shim for avx512 ternarylogic functions

050412a

rustbot added the perf-regression Performance regression. label Nov 12, 2025

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