Rollup of 19 pull requests by JonathanBrouwer · Pull Request #162989 · rust-lang/rust

JonathanBrouwer · 2026-09-18T21:05:34Z

Successful merges:

sparc: make ABI consistent with clang #160401 (sparc: make ABI consistent with clang)
don't calculate dtors if the self ty has impossible bounds #162715 (don't calculate dtors if the self ty has impossible bounds)
stdarch subtree update #162740 (stdarch subtree update)
Simplify query stack printing #162946 (Simplify query stack printing)
fix: unfulfilled nested dead code lint #161005 (fix: unfulfilled nested dead code lint)
Normalize non-rigid aliases in ty_known_to_outlive #161246 (Normalize non-rigid aliases in ty_known_to_outlive)
Fix docs of make_ascii_lowercase/make_ascii_upercase #161803 (Fix docs of make_ascii_lowercase/make_ascii_upercase)
Add mentions to sync back RELEASES.md to the main branch #162256 (Add mentions to sync back RELEASES.md to the main branch)
simplify Target::GenericParam #162661 (simplify Target::GenericParam)
Tidy footnote in platform-support.md #162666 (Tidy footnote in platform-support.md)
docs(num): add documentation for NonZero::from_str #162803 (docs(num): add documentation for NonZero::from_str)
use u64 limbs in core::num::bignum #162879 (use u64 limbs in core::num::bignum)
PassWrapper: adapt to LLVM reading exception model from module flag #162903 (PassWrapper: adapt to LLVM reading exception model from module flag)
c-variadic: add checks for windows i686 #162905 (c-variadic: add checks for windows i686)
Move more rustdoc-html tests in the right location #162906 (Move more rustdoc-html tests in the right location)
An assortment of polonius tweaks #162922 (An assortment of polonius tweaks)
Update unicode_data to Unicode version 18.0.0 #162929 (Update unicode_data to Unicode version 18.0.0)
Use niche length type for strlen to guarantee isize::MAX bound #162930 (Use niche length type for strlen to guarantee isize::MAX bound)
Guard types with unstable Allocator params ahead of partial stabilization #162960 (Guard types with unstable Allocator params ahead of partial stabilization)

r? @ghost

Create a similar rollup

expectations not fulfulling

Signed-off-by: Narfinger <Narfinger@users.noreply.github.com>

…ctly long double (i.e. f128) is special-case in the sparc abi

Signed-off-by: Amirhossein Akhlaghpour <m9.akhlaghpoor@gmail.com>

there's no need to wrap the value at runtime to visit it

- fix margins - ensure the MIR code wraps instead of needing scrollbars - defocus the trace suffixes

…sics guide xml

This updates the rust-version file to da51146.

…GR intrinsics

This updates the rust-version file to 32d94cc.

This reverts commit 102f03d2c410660a45d0231fdafdd347e0d4e77f.

…uwer Rollup of 19 pull requests Successful merges: - #160401 (sparc: make ABI consistent with clang) - #162715 (don't calculate dtors if the self ty has impossible bounds) - #162740 (stdarch subtree update) - #162946 (Simplify query stack printing) - #161005 (fix: unfulfilled nested dead code lint) - #161246 (Normalize non-rigid aliases in ty_known_to_outlive) - #161803 (Fix docs of make_ascii_lowercase/make_ascii_upercase) - #162256 (Add mentions to sync back `RELEASES.md` to the `main` branch) - #162661 (simplify `Target::GenericParam`) - #162666 (Tidy footnote in `platform-support.md`) - #162803 (docs(num): add documentation for `NonZero::from_str`) - #162879 (use u64 limbs in core::num::bignum) - #162903 (PassWrapper: adapt to LLVM reading exception model from module flag) - #162905 (c-variadic: add checks for windows i686) - #162906 (Move more `rustdoc-html` tests in the right location) - #162922 (An assortment of polonius tweaks) - #162929 (Update unicode_data to Unicode version 18.0.0) - #162930 (Use niche length type for strlen to guarantee `isize::MAX` bound) - #162960 (Guard types with unstable `Allocator` params ahead of partial stabilization)

rust-bors · 2026-09-18T21:25:48Z

💔 Test for ef75812 failed: CI. Failed job:

auto - test-x86_64-fuchsia (web logs, enhanced plaintext logs)

rust-log-analyzer · 2026-09-18T22:01:25Z

The job test-x86_64-fuchsia failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)


##[endgroup]
[TIMING:end] install::Src { stage: 2 } -- 20.528
Build completed successfully in 0:14:27
+ find /checkout/obj/install/lib/rustlib/aarch64-unknown-fuchsia/lib /checkout/obj/install/lib/rustlib/riscv64gc-unknown-fuchsia/lib /checkout/obj/install/lib/rustlib/x86_64-unknown-fuchsia/lib -type f -name '*.so' -exec sh -c $'/usr/local/bin/llvm-objcopy --only-keep-debug "$1" "$1.debug" && \\\n        /usr/local/bin/llvm-objcopy --strip-all --keep-section=.rustc "$1"' _ '{}' ';'
+ bash ../src/ci/docker/host-x86_64/test-x86_64-fuchsia/build-fuchsia.sh
+ '[' -z '' ']'
+ curl --retry 10 -s 'https://fuchsia.googlesource.com/jiri/+/HEAD/scripts/bootstrap_jiri?format=TEXT'
+ base64 --decode
+ bash -s fuchsia
ERROR: Failed to fetch log from https://fuchsia.googlesource.com/jiri/+log/refs/heads/main?format=JSON
Response was:

<!DOCTYPE html>
<html lang=en>
  <meta charset=utf-8>
  <meta name=viewport content="initial-scale=1, minimum-scale=1, width=device-width">
  <title>Error 503 (Service Unavailable)!!1</title>
  <style>
    *{margin:0;padding:0}html,code{font:15px/22px arial,sans-serif}html{background:#fff;color:#222;padding:15px}body{margin:7% auto 0;max-width:390px;min-height:180px;padding:30px 0 15px}* > body{background:url(//www.google.com/images/errors/robot.png) 100% 5px no-repeat;padding-right:205px}p{margin:11px 0 22px;overflow:hidden}ins{color:#777;text-decoration:none}a img{border:0}@media screen and (max-width:772px){body{background:none;margin-top:0;max-width:none;padding-right:0}}#logo{background:url(//www.google.com/images/logos/errorpage/error_logo-150x54.png) no-repeat;margin-left:-5px}@media only screen and (min-resolution:192dpi){#logo{background:url(//www.google.com/images/logos/errorpage/error_logo-150x54-2x.png) no-repeat 0% 0%/100% 100%;-moz-border-image:url(//www.google.com/images/logos/errorpage/error_logo-150x54-2x.png) 0}}@media only screen and (-webkit-min-device-pixel-ratio:2){#logo{background:url(//www.google.com/images/logos/errorpage/error_logo-150x54-2x.png) no-repeat;-webkit-background-size:100% 100%}}#logo{display:inline-block;height:54px;width:150px}
  </style>
  <a href=//www.google.com/><span id=logo aria-label=Google></span></a>
  <p><b>503.</b> <ins>That’s an error.</ins>
  <p>  <ins>That’s all we know.</ins>
  local time: Fri Sep 18 21:24:37 UTC 2026
  network time: Fri, 18 Sep 2026 21:24:39 GMT
****************************************************************************
To find more information about this job, visit the following URL:
https://rustc-dev-guide.rust-lang.org/tests/fuchsia.html

Important

For more information how to resolve CI failures of this job, visit this link.

JonathanBrouwer · 2026-09-18T22:01:29Z

@bors retry

rust-bors · 2026-09-19T01:21:32Z

☀️ Test successful - CI
Approved by: JonathanBrouwer
Duration: 3h 19m 12s
Pushing 971903d to main...

github-actions · 2026-09-19T01:24:09Z

What is this?

This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.

Comparing 420ed2a (parent) -> 971903d (this PR)

Test differences

Show 1135 test diffs

Stage 1

[assembly] tests/assembly-llvm/c-variadic/x86-windows.rs#I686_GNU: [missing] -> pass (J1)
[assembly] tests/assembly-llvm/c-variadic/x86-windows.rs#I686_MSVC: [missing] -> pass (J1)
[assembly] tests/assembly-llvm/c-variadic/x86-windows.rs#X86_64_GNU: [missing] -> pass (J1)
[assembly] tests/assembly-llvm/c-variadic/x86-windows.rs#X86_64_MSVC: [missing] -> pass (J1)
[assembly] tests/assembly-llvm/c-variadic/x86_64-windows.rs#WINDOWS_GNU: pass -> [missing] (J1)
[assembly] tests/assembly-llvm/c-variadic/x86_64-windows.rs#WINDOWS_MSVC: pass -> [missing] (J1)
[crashes] tests/crashes/150387.rs: pass -> [missing] (J1)
[crashes] tests/crashes/153947.rs: pass -> [missing] (J1)
[rustdoc-html] tests/rustdoc-html/attributes-inlining-108281.rs: pass -> [missing] (J1)
[rustdoc-html] tests/rustdoc-html/attributes-re-export-2021-edition.rs: pass -> [missing] (J1)
[rustdoc-html] tests/rustdoc-html/attributes-re-export.rs: pass -> [missing] (J1)
[rustdoc-html] tests/rustdoc-html/codeblock/slice-links.rs: [missing] -> pass (J1)
[rustdoc-html] tests/rustdoc-html/codeblock/tuples.rs: [missing] -> pass (J1)
[rustdoc-html] tests/rustdoc-html/deref-mut-35169-2.rs: pass -> [missing] (J1)
[rustdoc-html] tests/rustdoc-html/deref-mut-35169.rs: pass -> [missing] (J1)
[rustdoc-html] tests/rustdoc-html/deref/deref-mut-35169-2.rs: [missing] -> pass (J1)
[rustdoc-html] tests/rustdoc-html/deref/deref-mut-35169.rs: [missing] -> pass (J1)
[rustdoc-html] tests/rustdoc-html/glob-shadowing.rs: pass -> [missing] (J1)
[rustdoc-html] tests/rustdoc-html/jump-to-def/link-on-path-with-generics.rs: [missing] -> pass (J1)
[rustdoc-html] tests/rustdoc-html/link-on-path-with-generics.rs: pass -> [missing] (J1)
[rustdoc-html] tests/rustdoc-html/logo-class-default.rs: pass -> [missing] (J1)
[rustdoc-html] tests/rustdoc-html/logo-class-rust.rs: pass -> [missing] (J1)
[rustdoc-html] tests/rustdoc-html/logo-class.rs: pass -> [missing] (J1)
[rustdoc-html] tests/rustdoc-html/namespaces.rs: pass -> [missing] (J1)
[rustdoc-html] tests/rustdoc-html/reexport/attributes-inlining-108281.rs: [missing] -> pass (J1)
[rustdoc-html] tests/rustdoc-html/reexport/attributes-re-export-2021-edition.rs: [missing] -> pass (J1)
[rustdoc-html] tests/rustdoc-html/reexport/attributes-re-export.rs: [missing] -> pass (J1)
[rustdoc-html] tests/rustdoc-html/reexport/glob-shadowing.rs: [missing] -> pass (J1)
[rustdoc-html] tests/rustdoc-html/reexport/namespaces.rs: [missing] -> pass (J1)
[rustdoc-html] tests/rustdoc-html/sidebar/logo-class-default.rs: [missing] -> pass (J1)
[rustdoc-html] tests/rustdoc-html/sidebar/logo-class-rust.rs: [missing] -> pass (J1)
[rustdoc-html] tests/rustdoc-html/sidebar/logo-class.rs: [missing] -> pass (J1)
[rustdoc-html] tests/rustdoc-html/slice-links.rs: pass -> [missing] (J1)
[rustdoc-html] tests/rustdoc-html/tuples.rs: pass -> [missing] (J1)
num::bignum::test_bit_length_32x40: pass -> [missing] (J3)
num::bignum::test_bit_length_big: [missing] -> pass (J3)
[codegen] tests/codegen-llvm/cstr-len-plus-one.rs: [missing] -> pass (J5)
[codegen] tests/codegen-llvm/f128-sparc-callconv.rs#sparc-linux: [missing] -> pass (J5)
[codegen] tests/codegen-llvm/f128-sparc-callconv.rs#sparc-none: [missing] -> pass (J5)
[codegen] tests/codegen-llvm/repr/transparent-imm-array.rs#sparc: pass -> [missing] (J5)
[ui] tests/ui/abi/c-zst.rs#sparc-none: [missing] -> pass (J6)
[ui] tests/ui/assumptions_on_binders/nested-gat-outlives-issue-161067.rs: [missing] -> pass (J6)
[ui] tests/ui/dropck/overlapping_impossible_drop.rs: [missing] -> pass (J6)
[ui] tests/ui/dropck/overlapping_impossible_drop_min_specialization.rs: [missing] -> pass (J6)
[ui] tests/ui/lint/rfc-2383-lint-reason/expect_inside_dead_code.rs: [missing] -> pass (J6)
[ui (polonius)] tests/ui/abi/c-zst.rs#sparc-linux: [missing] -> pass (J8)
[ui (polonius)] tests/ui/abi/c-zst.rs#sparc-none: [missing] -> pass (J8)
[ui (polonius)] tests/ui/assumptions_on_binders/nested-gat-outlives-issue-161067.rs: [missing] -> pass (J8)
[ui (polonius)] tests/ui/dropck/overlapping_impossible_drop.rs: [missing] -> pass (J8)
[ui (polonius)] tests/ui/dropck/overlapping_impossible_drop_min_specialization.rs: [missing] -> pass (J8)
[ui (polonius)] tests/ui/lint/rfc-2383-lint-reason/expect_inside_dead_code.rs: [missing] -> pass (J8)

Stage 2

[rustdoc-html] tests/rustdoc-html/attributes-inlining-108281.rs: pass -> [missing] (J0)
[rustdoc-html] tests/rustdoc-html/attributes-re-export-2021-edition.rs: pass -> [missing] (J0)
[rustdoc-html] tests/rustdoc-html/attributes-re-export.rs: pass -> [missing] (J0)
[rustdoc-html] tests/rustdoc-html/codeblock/slice-links.rs: [missing] -> pass (J0)
[rustdoc-html] tests/rustdoc-html/codeblock/tuples.rs: [missing] -> pass (J0)
[rustdoc-html] tests/rustdoc-html/deref-mut-35169-2.rs: pass -> [missing] (J0)
[rustdoc-html] tests/rustdoc-html/deref-mut-35169.rs: pass -> [missing] (J0)
[rustdoc-html] tests/rustdoc-html/deref/deref-mut-35169-2.rs: [missing] -> pass (J0)
[rustdoc-html] tests/rustdoc-html/deref/deref-mut-35169.rs: [missing] -> pass (J0)
[rustdoc-html] tests/rustdoc-html/glob-shadowing.rs: pass -> [missing] (J0)
[rustdoc-html] tests/rustdoc-html/jump-to-def/link-on-path-with-generics.rs: [missing] -> pass (J0)
[rustdoc-html] tests/rustdoc-html/link-on-path-with-generics.rs: pass -> [missing] (J0)
[rustdoc-html] tests/rustdoc-html/logo-class-default.rs: pass -> [missing] (J0)
[rustdoc-html] tests/rustdoc-html/logo-class-rust.rs: pass -> [missing] (J0)
[rustdoc-html] tests/rustdoc-html/logo-class.rs: pass -> [missing] (J0)
[rustdoc-html] tests/rustdoc-html/namespaces.rs: pass -> [missing] (J0)
[rustdoc-html] tests/rustdoc-html/reexport/attributes-inlining-108281.rs: [missing] -> pass (J0)
[rustdoc-html] tests/rustdoc-html/reexport/attributes-re-export-2021-edition.rs: [missing] -> pass (J0)
[rustdoc-html] tests/rustdoc-html/reexport/attributes-re-export.rs: [missing] -> pass (J0)
[rustdoc-html] tests/rustdoc-html/reexport/glob-shadowing.rs: [missing] -> pass (J0)
[rustdoc-html] tests/rustdoc-html/reexport/namespaces.rs: [missing] -> pass (J0)
[rustdoc-html] tests/rustdoc-html/sidebar/logo-class-default.rs: [missing] -> pass (J0)
[rustdoc-html] tests/rustdoc-html/sidebar/logo-class-rust.rs: [missing] -> pass (J0)
[rustdoc-html] tests/rustdoc-html/sidebar/logo-class.rs: [missing] -> pass (J0)
[rustdoc-html] tests/rustdoc-html/slice-links.rs: pass -> [missing] (J0)
[rustdoc-html] tests/rustdoc-html/tuples.rs: pass -> [missing] (J0)
[ui] tests/ui/abi/c-zst.rs#sparc-linux: [missing] -> ignore (gcc backend is marked as ignore) (J2)
[ui] tests/ui/abi/c-zst.rs#sparc-none: [missing] -> ignore (gcc backend is marked as ignore) (J2)
[assembly] tests/assembly-llvm/c-variadic/x86-windows.rs#I686_GNU: [missing] -> pass (J4)
[assembly] tests/assembly-llvm/c-variadic/x86-windows.rs#I686_MSVC: [missing] -> pass (J4)
[assembly] tests/assembly-llvm/c-variadic/x86-windows.rs#X86_64_GNU: [missing] -> pass (J4)
[assembly] tests/assembly-llvm/c-variadic/x86-windows.rs#X86_64_MSVC: [missing] -> pass (J4)
[assembly] tests/assembly-llvm/c-variadic/x86_64-windows.rs#WINDOWS_GNU: pass -> [missing] (J4)
[assembly] tests/assembly-llvm/c-variadic/x86_64-windows.rs#WINDOWS_MSVC: pass -> [missing] (J4)
[codegen] tests/codegen-llvm/cstr-len-plus-one.rs: [missing] -> pass (J4)
[codegen] tests/codegen-llvm/f128-sparc-callconv.rs#sparc-linux: [missing] -> pass (J4)
[codegen] tests/codegen-llvm/f128-sparc-callconv.rs#sparc-none: [missing] -> pass (J4)
[codegen] tests/codegen-llvm/repr/transparent-imm-array.rs#sparc: pass -> [missing] (J4)
[ui] tests/ui/abi/c-zst.rs#sparc-linux: [missing] -> pass (J7)
[ui] tests/ui/abi/c-zst.rs#sparc-none: [missing] -> pass (J7)
[ui] tests/ui/dropck/overlapping_impossible_drop.rs: [missing] -> pass (J9)
[ui] tests/ui/dropck/overlapping_impossible_drop_min_specialization.rs: [missing] -> pass (J9)
[ui] tests/ui/lint/rfc-2383-lint-reason/expect_inside_dead_code.rs: [missing] -> pass (J9)
[crashes] tests/crashes/150387.rs: pass -> [missing] (J10)
[crashes] tests/crashes/153947.rs: pass -> [missing] (J10)
[ui] tests/ui/assumptions_on_binders/nested-gat-outlives-issue-161067.rs: [missing] -> pass (J11)
[ui] tests/ui/assumptions_on_binders/nested-gat-outlives-issue-161067.rs: [missing] -> ignore (ignored if rustc wasn't built with debug assertions) (J12)
num::bignum::test_bit_length_32x40: pass -> [missing] (J13)
num::bignum::test_bit_length_big: [missing] -> pass (J13)

(and 1 additional test diff)

Additionally, 1034 doctest diffs were found. These are ignored, as they are noisy.

Job group index

Test dashboard

Run

cargo run --manifest-path src/ci/citool/Cargo.toml -- \
    test-dashboard 971903d9aee24befd88423f42826c232e27c8190 --output-dir test-dashboard

And then open test-dashboard/index.html in your browser to see an overview of all executed tests.

Job duration changes

test-x86_64-gnu-llvm-22-1: 50m 39s -> 1h 14m (+46.9%)
dist-armhf-linux: 1h 5m -> 1h 33m (+42.9%)
test-x86_64-gnu-miri: 1h 20m -> 48m 52s (-39.4%)
test-x86_64-gnu-nopt: 2h 23m -> 1h 29m (-37.6%)
test-x86_64-gnu-llvm-22-2: 1h 41m -> 1h 4m (-36.1%)
test-x86_64-msvc-ext3: 1h 20m -> 1h 48m (+34.1%)
dist-i686-linux: 1h 54m -> 1h 16m (-33.1%)
dist-powerpc64-linux-musl: 1h 12m -> 1h 36m (+32.9%)
test-x86_64-gnu-parallel-frontend: 1h 46m -> 1h 11m (-32.7%)
test-x86_64-msvc-ext2: 1h 51m -> 1h 15m (-32.6%)

How to interpret the job duration changes?

Job durations can vary a lot, based on the actual runner instance
that executed the job, system noise, invalidated caches, etc. The table above is provided
mostly for t-infra members, for simpler debugging of potential CI slow-downs.

rust-timer · 2026-09-19T02:07:09Z

Finished benchmarking commit (971903d): comparison URL.

Overall result: ❌✅ regressions and improvements - please read:

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)	-	-	0
Regressions ❌ (secondary)	0.1%	[0.1%, 0.2%]	4
Improvements ✅ (primary)	-0.3%	[-0.4%, -0.1%]	18
Improvements ✅ (secondary)	-0.2%	[-0.3%, -0.2%]	4
All ❌✅ (primary)	-0.3%	[-0.4%, -0.1%]	18

Max RSS (memory usage)

Results (primary 4.1%, secondary 1.9%)

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

	mean	range	count
Regressions ❌ (primary)	4.1%	[4.1%, 4.1%]	1
Regressions ❌ (secondary)	1.9%	[1.9%, 1.9%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	4.1%	[4.1%, 4.1%]	1

Cycles

Results (primary -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)	-2.4%	[-2.4%, -2.4%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-2.4%	[-2.4%, -2.4%]	1

Binary size

Results (primary -0.0%)

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)	-0.0%	[-0.0%, -0.0%]	3
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-0.0%	[-0.0%, -0.0%]	3

Bootstrap: 498.333s -> 496.358s (-0.40%)
Artifact size: 408.93 MiB -> 408.92 MiB (-0.00%)

rust-bors · 2026-09-19T02:28:31Z

📌 Perf builds for each rolled up PR:

PR#	Message	Perf Build Sha
#160401	sparc: make ABI consistent with clang	`3edd7a7adc298a8a7fe6e7c5cf9bb2056e472bb6` (link)
#162715	don't calculate dtors if the self ty has impossible bounds	`baddcd6fe3c61ef56114adffe0389b00ba73d767` (link)
#162740	stdarch subtree update	`a39638f00e44c0cf0f36c72f4fe19d8c95e29efa` (link)
#162946	Simplify query stack printing	`b833e670595d0060c4ec175c0c6c52675ff29df8` (link)
#161005	fix: unfulfilled nested dead code lint	`8b750f29f572e110af83c8d3fbd1b4f8bff13cb1` (link)
#161246	Normalize non-rigid aliases in ty_known_to_outlive	`ab204d90081bc8d11715d38dd2a294fc412400c1` (link)
#161803	Fix docs of make_ascii_lowercase/make_ascii_upercase	`a5c94b7f2de5dfee8b939183d2f7538bfd2e5a32` (link)
#162256	Add mentions to sync back `RELEASES.md` to the `main` branch	`5e62a2dea6ff9f2d52661cc11361ba8862ca0caf` (link)
#162661	simplify `Target::GenericParam`	`b58db263e5048a1087153225206a787bea483a4a` (link)
#162666	Tidy footnote in `platform-support.md`	`7c8e650586aaff9c97b015ca88a529d9e3adf638` (link)
#162803	docs(num): add documentation for `NonZero::from_str`	`7e106fa6e7b934aa9a1378b2f683b69a5e6c693e` (link)
#162879	use u64 limbs in core::num::bignum	`898e43b1abd9673f6fa83c585a055ee971d1683b` (link)
#162903	PassWrapper: adapt to LLVM reading exception model from mod…	`e690d58b649d9312e43514ee08c52cf21076d024` (link)
#162905	c-variadic: add checks for windows i686	`1561d607d2f609b594772ee682044cc5d85f7e4c` (link)
#162906	Move more `rustdoc-html` tests in the right location	`35cb2bc9ddde2ad822945677040a110b6621f451` (link)
#162922	An assortment of polonius tweaks	`8b4da8db8b5dd405ca3372c9ddd67767686190a1` (link)
#162929	Update unicode_data to Unicode version 18.0.0	`0eb94af6faa60ed964ec07840046ba232f79b6d9` (link)
#162930	Use niche length type for strlen to guarantee `isize::MAX` …	`baa60f9c178040225b1b476ece0109c9287db154` (link)
#162960	Guard types with unstable `Allocator` params ahead of parti…	`9933239721b4815471ed29826793299dbd2a4752` (link)

parent commit: 420ed2a0c3

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-bors · 2026-09-19T03:08:19Z

💔 Test for 0fafd9b failed: CI

tgross35 · 2026-09-19T03:33:53Z

#162879 was probably the improvements, queued a build at #162879 (comment)

…ieyouxu Temporarily disable `test-x86_64-fuchsia` Since we seem to be overwhelming unauthenticated servers (e.g. rust-lang#162989 (comment)). ``` Error 503 (Service Unavailable)!!1 ``` So let's disable for now. Tracked in rust-lang#162999. Also discussed in https://rust-lang.zulipchat.com/#narrow/channel/242791-t-infra/topic/Tree.20ops/near/625351251. r? me

Kobzol · 2026-09-19T08:13:27Z

As a tip, you can also do rust-timer triage <unrolled-sha> directly on the rollup PR, to schedule the run (you can also queue multiple SHAs separated by a space).

JonathanBrouwer · 2026-09-19T08:41:13Z

@rust-timer triage 3edd7a7 baddcd6 a39638f 8b750f2 ab204d9 e690d58 8b4da8d 0eb94af baa60f9 9933239

rust-timer · 2026-09-19T08:41:18Z

Running triage with 16 benchmarks

Triage only executes the benchmarks on rollup members, that were changed significantly on the rollup.
For this rollup, these benchmarks are:

cargo-0.87.1
clap_derive-4.5.32
eza-0.21.2
html5ever-0.31.0
html5ever-0.31.0-new-solver
image-0.25.6
large-workspace
match-stress
regex-automata-0.4.8
regression-31157
ripgrep-14.1.1
serde-1.0.219
serde_derive-1.0.219
stm32f4-0.15.1
tokio-1.53.1
wg-grammar

#160401 `3edd7a7` sparc: make ABI consistent with clang

This perf run didn't have relevant results for the `instruction count` metric.

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

This perf run didn't have relevant results for this metric.

Cycles

This perf run didn't have relevant results for this metric.

Binary size

This perf run didn't have relevant results for this metric.

#162715 `baddcd6` don't calculate dtors if the self ty has impossible bounds

This perf run didn't have relevant results for the `instruction count` metric.

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

Results (primary 8.0%)

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

	mean	range	count
Regressions ❌ (primary)	8.0%	[8.0%, 8.0%]	1
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	8.0%	[8.0%, 8.0%]	1

Cycles

Results (secondary 9.6%)

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)	9.6%	[9.6%, 9.6%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Binary size

This perf run didn't have relevant results for this metric.

#162740 `a39638f` stdarch subtree update

This perf run didn't have relevant results for the `instruction count` metric.

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

This perf run didn't have relevant results for this metric.

Cycles

This perf run didn't have relevant results for this metric.

Binary size

This perf run didn't have relevant results for this metric.

#161005 `8b750f2` fix: unfulfilled nested dead code lint

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)	-	-	0
Regressions ❌ (secondary)	0.1%	[0.1%, 0.1%]	4
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

This perf run didn't have relevant results for this metric.

Cycles

This perf run didn't have relevant results for this metric.

Binary size

This perf run didn't have relevant results for this metric.

#161246 `ab204d9` Normalize non-rigid aliases in ty_known_to_outlive

This perf run didn't have relevant results for the `instruction count` metric.

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

This perf run didn't have relevant results for this metric.

Cycles

This perf run didn't have relevant results for this metric.

Binary size

This perf run didn't have relevant results for this metric.

#162903 `e690d58` PassWrapper: adapt to LLVM reading exception model from module flag

This perf run didn't have relevant results for the `instruction count` metric.

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

This perf run didn't have relevant results for this metric.

Cycles

Results (secondary 2.1%)

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)	2.1%	[2.1%, 2.1%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Binary size

This perf run didn't have relevant results for this metric.

#162922 `8b4da8d` An assortment of polonius tweaks

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)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-0.3%	[-0.4%, -0.1%]	18
Improvements ✅ (secondary)	-0.2%	[-0.3%, -0.2%]	8
All ❌✅ (primary)	-0.3%	[-0.4%, -0.1%]	18

Max RSS (memory usage)

This perf run didn't have relevant results for this metric.

Cycles

Results (primary -2.7%)

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)	-	-	0
All ❌✅ (primary)	-2.7%	[-2.7%, -2.7%]	1

Binary size

This perf run didn't have relevant results for this metric.

#162929 `0eb94af` Update unicode_data to Unicode version 18.0.0

This perf run didn't have relevant results for the `instruction count` metric.

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

This perf run didn't have relevant results for this metric.

Cycles

This perf run didn't have relevant results for this metric.

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)	0.0%	[0.0%, 0.0%]	2
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-0.1%	[-0.2%, -0.1%]	42
Improvements ✅ (secondary)	-0.1%	[-0.2%, -0.0%]	16
All ❌✅ (primary)	-0.1%	[-0.2%, 0.0%]	44

#162930 `baa60f9` Use niche length type for strlen to guarantee `isize::MAX` bound

This perf run didn't have relevant results for the `instruction count` metric.

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

This perf run didn't have relevant results for this metric.

Cycles

This perf run didn't have relevant results for this metric.

Binary size

This perf run didn't have relevant results for this metric.

#162960 `9933239` Guard types with unstable `Allocator` params ahead of partial stabilization

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)	-	-	0
Regressions ❌ (secondary)	0.2%	[0.2%, 0.2%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

This perf run didn't have relevant results for this metric.

Cycles

Results (secondary 2.7%)

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)	2.7%	[2.7%, 2.7%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Binary size

This perf run didn't have relevant results for this metric.

Rollup merge of #163001 - jieyouxu:temp-disable-fuchsia, r=jieyouxu Temporarily disable `test-x86_64-fuchsia` Since we seem to be overwhelming unauthenticated servers (e.g. #162989 (comment)). ``` Error 503 (Service Unavailable)!!1 ``` So let's disable for now. Tracked in #162999. Also discussed in https://rust-lang.zulipchat.com/#narrow/channel/242791-t-infra/topic/Tree.20ops/near/625351251. r? me

dronavallipranav and others added 30 commits August 12, 2026 16:37

fix nested dead code lint

f3afa22

expectations not fulfulling

update docs to be more precise

d1d3354

Signed-off-by: Narfinger <Narfinger@users.noreply.github.com>

Remove has_default field of Target::GenericParam

490ef1b

Flatten Target::GenericParam

bf68dfa

Tidy footnote in platform-support.md

69901a4

sparc: pass ZST arguments

2324b37

sparc: pass and return f128 indirectly and return aggregates indire…

a44d3ad

…ctly long double (i.e. f128) is special-case in the sparc abi

add sparc c-zst revision

e8534c6

docs(num): add documentation for NonZero::from_str

8c7d8ed

style(num): unhide imported items

7e6b378

fix: normalize non-rigid aliases in ty_known_to_outlive

c6c7dfd

Signed-off-by: Amirhossein Akhlaghpour <m9.akhlaghpoor@gmail.com>

cleanup x86 c-variadic checks

9f2eef8

Move more rustdoc-html tests in the right location

8730acb

c-variadic: add x86 windows checks

4cba8e5

fix and clean up variance recording in liveness

cba3954

simplify make_all_regions_live

8a699c7

there's no need to wrap the value at runtime to visit it

add quick links

942dcc9

more visual improvements

ada6d89

- fix margins - ensure the MIR code wraps instead of needing scrollbars - defocus the trace suffixes

Add missing avx512vl intrinsics for f32->u32 conversions

7acb332

Add manual exception for the intrinsics forgotten in the intel intrin…

1828711

…sics guide xml

Use the proper tracking issue

f3f6cfd

cargo fmt

5cf706f

Prepare for merging from rust-lang/rust

2ccfcf8

This updates the rust-version file to da51146.

loongarch: Add portable intrinsics::simd implementations for VAVG/VAV…

964fc0a

…GR intrinsics

Prepare for merging from rust-lang/rust

d580d01

This updates the rust-version file to 32d94cc.

Run rustfmt

20e2422

Update vzipq arm instruction assertions

5761e97

Revert "Use SIMD intrinsics for vector shifts"

91a8a01

This reverts commit 102f03d2c410660a45d0231fdafdd347e0d4e77f.

de-constify methods that depended on the vector shift ones

20a1f52

fmt

beac67d

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rust-bors Bot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Sep 18, 2026

rust-bors Bot added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Sep 18, 2026

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rust-bors Bot added merged-by-bors This PR was explicitly merged by bors. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Sep 19, 2026

rust-bors Bot merged commit 971903d into rust-lang:main Sep 19, 2026
14 of 15 checks passed

rustbot added this to the 1.100.0 milestone Sep 19, 2026

rustbot added the perf-regression Performance regression. label Sep 19, 2026

rust-bors Bot added the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Sep 19, 2026

tgross35 mentioned this pull request Sep 19, 2026

use u64 limbs in core::num::bignum #162879

Merged

This was referenced Sep 19, 2026

Temporarily disabling test-x86_64-fuchsia due to unauthenticated google servers getting overwhelmed #162999

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Temporarily disable test-x86_64-fuchsia #163001

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Test differences

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rust-timer commented Sep 19, 2026

Overall result: ❌✅ regressions and improvements - please read:

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tgross35 commented Sep 19, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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#160401 3edd7a7 sparc: make ABI consistent with clang

#162715 baddcd6 don't calculate dtors if the self ty has impossible bounds

#162740 a39638f stdarch subtree update

#161005 8b750f2 fix: unfulfilled nested dead code lint

#161246 ab204d9 Normalize non-rigid aliases in ty_known_to_outlive

#162903 e690d58 PassWrapper: adapt to LLVM reading exception model from module flag

#162922 8b4da8d An assortment of polonius tweaks

#162929 0eb94af Update unicode_data to Unicode version 18.0.0

#162930 baa60f9 Use niche length type for strlen to guarantee isize::MAX bound

#162960 9933239 Guard types with unstable Allocator params ahead of partial stabilization

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tgross35 commented Sep 19, 2026 •

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rust-timer commented Sep 19, 2026 •

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#160401 `3edd7a7` sparc: make ABI consistent with clang

#162715 `baddcd6` don't calculate dtors if the self ty has impossible bounds

#162740 `a39638f` stdarch subtree update

#161005 `8b750f2` fix: unfulfilled nested dead code lint

#161246 `ab204d9` Normalize non-rigid aliases in ty_known_to_outlive

#162903 `e690d58` PassWrapper: adapt to LLVM reading exception model from module flag

#162922 `8b4da8d` An assortment of polonius tweaks

#162929 `0eb94af` Update unicode_data to Unicode version 18.0.0

#162930 `baa60f9` Use niche length type for strlen to guarantee `isize::MAX` bound

#162960 `9933239` Guard types with unstable `Allocator` params ahead of partial stabilization