Rollup of 19 pull requests by JonathanBrouwer · Pull Request #163095 · rust-lang/rust

JonathanBrouwer · 2026-09-21T08:16:21Z

Successful merges:

When error from local macro, include macro def span #161051 (When error from local macro, include macro def span)
Streamline StateDiffCollector #161629 (Streamline StateDiffCollector)
add case mapping fast paths for Latin-1 #162750 (add case mapping fast paths for Latin-1)
Do not continue past rustc_resolve when encountering duplicated items #162831 (Do not continue past rustc_resolve when encountering duplicated items)
rustdoc: account for nested parens and split text events in bare urls lint #162835 (rustdoc: account for nested parens and split text events in bare urls lint)
Depend on lockfiles to prevent GC of the current session #162952 (Depend on lockfiles to prevent GC of the current session)
Report runtime range endpoints for runtime values #163044 (Report runtime range endpoints for runtime values)
Use x30 register name with LLVM 23+ #163062 (Use x30 register name with LLVM 23+)
miri subtree update #163091 (miri subtree update)
Declare multi-kind constants for MacroKinds #162939 (Declare multi-kind constants for MacroKinds)
Windows: don't error if access_mode is set on OpenOptions #162984 (Windows: don't error if access_mode is set on OpenOptions)
Avoid unreachable integer underflow check in CStr::count_bytes() #163005 (Avoid unreachable integer underflow check in CStr::count_bytes())
Prepare for the introduction of forced keywords (k#) #163019 (Prepare for the introduction of forced keywords (k#))
Dir: fix fallback impl for remove_dir #163020 (Dir: fix fallback impl for remove_dir)
Be more explicit on suggestion type without changing how they are rendered #163041 (Be more explicit on suggestion type without changing how they are rendered)
Use verbose suggestion for mut binding instead of &mut binding #163047 (Use verbose suggestion for mut binding instead of &mut binding)
Fix ArgAttributes mismatches in ABI UI tests for LoongArch64 and RiscV64 #163075 (Fix ArgAttributes mismatches in ABI UI tests for LoongArch64 and RiscV64)
enable f128 from u64/i64 test #163079 (enable f128 from u64/i64 test)
Remove TypeChecker::root_cx #163082 (Remove TypeChecker::root_cx)

Because shimmed TCP sockets only receive host readiness events after `connect` or `listen` has been invoked, we need to manually set the initial readiness of a TCP socket.

…adiness Manually set initial TCP socket readiness

This updates the rust-version file to f248f40.

Pull recent changes from https://github.com/rust-lang/rust via Josh. Upstream ref: rust-lang/rust@f248f40 Filtered ref: rust-lang/miri@bd61522 Upstream diff: rust-lang/rust@0ed41eb...f248f40 This merge was created using https://github.com/rust-lang/josh-sync.

Automatic Rustup

This updates the rust-version file to 315ecf4.

Pull recent changes from https://github.com/rust-lang/rust via Josh. Upstream ref: rust-lang/rust@315ecf4 Filtered ref: rust-lang/miri@e8c919d Upstream diff: rust-lang/rust@f248f40...315ecf4 This merge was created using https://github.com/rust-lang/josh-sync.

Automatic Rustup

use proper c_void for '*_' shim signatures

unleaking considered harmful

This updates the rust-version file to c26ce70.

Pull recent changes from https://github.com/rust-lang/rust via Josh. Upstream ref: rust-lang/rust@c26ce70 Filtered ref: rust-lang/miri@69f97e4 Upstream diff: rust-lang/rust@315ecf4...c26ce70 This merge was created using https://github.com/rust-lang/josh-sync.

Automatic Rustup

Co-authored-by: malezjaa <poreba.kris@gmail.com>

This updates the rust-version file to 923c95c.

Pull recent changes from https://github.com/rust-lang/rust via Josh. Upstream ref: rust-lang/rust@923c95c Filtered ref: rust-lang/miri@2936035 Upstream diff: rust-lang/rust@c26ce70...923c95c This merge was created using https://github.com/rust-lang/josh-sync.

Automatic Rustup

If rmeta encoding has to define these constants anyway, we might as well provide them as inherent constants and use them in `descr` too. In current versions of bitflags, flags can be combined in const contexts by calling `union` instead of using the overloaded `|` operator.

Instead of manually skipping it right before the remove_dir. This will be simpler once we stop immediately copying from the old incr comp dir. Previously this wasn't possible due to the usage of process-based fcntl locking, but I added proper fd-based locking recently.

This reverts commit 8c704e3becec2da6d439c439f5a86a48c2e29427.

JonathanBrouwer · 2026-09-21T08:16:32Z

@bors r+ p=5

rust-bors · 2026-09-21T08:16:48Z

📌 Commit 43ad959 has been approved by JonathanBrouwer

It is now in the queue for this repository.

rust-bors · 2026-09-21T11:24:08Z

☀️ Test successful - CI
Approved by: JonathanBrouwer
Duration: 3h 7m 4s
Pushing f45772e to main...

github-actions · 2026-09-21T11:27:53Z

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 220b36c (parent) -> f45772e (this PR)

Test differences

Show 173 test diffs

Stage 1

[ui] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#both: [missing] -> pass (J0)
[ui] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#chars: [missing] -> pass (J0)
[ui] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#generic: [missing] -> pass (J0)
[ui] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#inferred: [missing] -> pass (J0)
[ui] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#late_inferred: [missing] -> pass (J0)
[ui] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#wrong_type: [missing] -> pass (J0)
[ui] tests/ui/resolve/duplicated-enum-variant.rs: [missing] -> pass (J0)
[ui] tests/ui/resolve/duplicated-item-in-const-generics.rs: [missing] -> pass (J0)
[ui] tests/ui/use/use-self-at-end-2.rs#e2015: [missing] -> pass (J0)
[ui] tests/ui/use/use-self-at-end-2.rs#e2018: [missing] -> pass (J0)
[ui] tests/ui/use/use-self-at-end-2.rs#e2021: [missing] -> pass (J0)
[ui (polonius)] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#both: [missing] -> pass (J3)
[ui (polonius)] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#chars: [missing] -> pass (J3)
[ui (polonius)] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#generic: [missing] -> pass (J3)
[ui (polonius)] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#inferred: [missing] -> pass (J3)
[ui (polonius)] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#late_inferred: [missing] -> pass (J3)
[ui (polonius)] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#wrong_type: [missing] -> pass (J3)
[ui (polonius)] tests/ui/resolve/duplicated-enum-variant.rs: [missing] -> pass (J3)
[ui (polonius)] tests/ui/resolve/duplicated-item-in-const-generics.rs: [missing] -> pass (J3)
[ui (polonius)] tests/ui/use/use-self-at-end-2.rs#e2015: [missing] -> pass (J3)
[ui (polonius)] tests/ui/use/use-self-at-end-2.rs#e2018: [missing] -> pass (J3)
[ui (polonius)] tests/ui/use/use-self-at-end-2.rs#e2021: [missing] -> pass (J3)
char::methods::bench_non_latin1_char_to_lowercase: [missing] -> pass (J5)
char::methods::bench_non_latin1_char_to_uppercase: [missing] -> pass (J5)
num::floats::from_u64_i64::const_::test_f128: [missing] -> pass (J5)
num::floats::from_u64_i64::test_f128: [missing] -> pass (J5)
[codegen] tests/codegen-llvm/asm-aarch64-x30.rs#LLVM22: [missing] -> ignore (ignored when the LLVM version (23.1.1) is newer than majorversion 22) (J6)
[codegen] tests/codegen-llvm/asm-aarch64-x30.rs#LLVM23: [missing] -> pass (J6)
[codegen] tests/codegen-llvm/asm-arm-r14.rs#LLVM22: [missing] -> ignore (ignored when the LLVM version (23.1.1) is newer than majorversion 22) (J6)
[codegen] tests/codegen-llvm/asm-arm-r14.rs#LLVM23: [missing] -> pass (J6)
[codegen] tests/codegen-llvm/asm-aarch64-x30.rs#LLVM23: [missing] -> ignore (ignored when the LLVM version 22.1.2 is older than 23.0.0) (J7)
[codegen] tests/codegen-llvm/asm-arm-r14.rs#LLVM23: [missing] -> ignore (ignored when the LLVM version 22.1.2 is older than 23.0.0) (J7)
[codegen] tests/codegen-llvm/asm-aarch64-x30.rs#LLVM22: [missing] -> pass (J8)
[codegen] tests/codegen-llvm/asm-arm-r14.rs#LLVM22: [missing] -> pass (J8)
[crashes] tests/crashes/120873.rs: pass -> [missing] (J8)
[crashes] tests/crashes/123690.rs: pass -> [missing] (J8)
[crashes] tests/crashes/155482-2.rs: [missing] -> pass (J8)
[ui] tests/ui-fulldeps/internal-lints/lint_pass_impl_without_macro.rs: pass -> ignore (ignored when the bootstrapping stage is stage1) (J8)
[codegen] tests/codegen-llvm/asm-aarch64-x30.rs#LLVM23: [missing] -> ignore (ignored when the LLVM version 21.1.2 is older than 23.0.0) (J14)
[codegen] tests/codegen-llvm/asm-arm-r14.rs#LLVM23: [missing] -> ignore (ignored when the LLVM version 21.1.2 is older than 23.0.0) (J14)

Stage 2

[ui] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#both: [missing] -> pass (J1)
[ui] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#chars: [missing] -> pass (J1)
[ui] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#generic: [missing] -> pass (J1)
[ui] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#inferred: [missing] -> pass (J1)
[ui] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#late_inferred: [missing] -> pass (J1)
[ui] tests/ui/pattern/runtime-range-endpoints-issue-131327.rs#wrong_type: [missing] -> pass (J1)
[ui] tests/ui/resolve/duplicated-enum-variant.rs: [missing] -> pass (J1)
[ui] tests/ui/resolve/duplicated-item-in-const-generics.rs: [missing] -> pass (J1)
[ui] tests/ui/use/use-self-at-end-2.rs#e2015: [missing] -> pass (J1)
[ui] tests/ui/use/use-self-at-end-2.rs#e2018: [missing] -> pass (J1)
[ui] tests/ui/use/use-self-at-end-2.rs#e2021: [missing] -> pass (J1)
[codegen] tests/codegen-llvm/asm-aarch64-x30.rs#LLVM23: [missing] -> ignore (ignored when the LLVM version 21.1.2 is older than 23.0.0) (J2)
[codegen] tests/codegen-llvm/asm-arm-r14.rs#LLVM23: [missing] -> ignore (ignored when the LLVM version 21.1.2 is older than 23.0.0) (J2)
[codegen] tests/codegen-llvm/asm-aarch64-x30.rs#LLVM22: [missing] -> ignore (ignored when the LLVM version (23.1.1) is newer than majorversion 22) (J4)
[codegen] tests/codegen-llvm/asm-aarch64-x30.rs#LLVM23: [missing] -> pass (J4)
[codegen] tests/codegen-llvm/asm-arm-r14.rs#LLVM22: [missing] -> ignore (ignored when the LLVM version (23.1.1) is newer than majorversion 22) (J4)
[codegen] tests/codegen-llvm/asm-arm-r14.rs#LLVM23: [missing] -> pass (J4)
[crashes] tests/crashes/155482-2.rs: [missing] -> ignore (only executed when the architecture is x86_64) (J9)
[crashes] tests/crashes/155482.rs: pass -> ignore (only executed when the architecture is x86_64) (J9)
char::methods::bench_non_latin1_char_to_lowercase: [missing] -> pass (J10)
char::methods::bench_non_latin1_char_to_uppercase: [missing] -> pass (J10)
num::floats::from_u64_i64::const_::test_f128: [missing] -> pass (J11)
num::floats::from_u64_i64::test_f128: [missing] -> pass (J11)
[codegen] tests/codegen-llvm/asm-aarch64-x30.rs#LLVM22: [missing] -> pass (J12)
[codegen] tests/codegen-llvm/asm-arm-r14.rs#LLVM22: [missing] -> pass (J12)
[codegen] tests/codegen-llvm/asm-aarch64-x30.rs#LLVM23: [missing] -> ignore (ignored when the LLVM version 22.1.2 is older than 23.0.0) (J13)
[codegen] tests/codegen-llvm/asm-arm-r14.rs#LLVM23: [missing] -> ignore (ignored when the LLVM version 22.1.2 is older than 23.0.0) (J13)
[crashes] tests/crashes/120873.rs: pass -> [missing] (J15)
[crashes] tests/crashes/123690.rs: pass -> [missing] (J15)
fs::tests::windows_access_mode_override: [missing] -> pass (J16)
[crashes] tests/crashes/155482-2.rs: [missing] -> pass (J17)

Additionally, 102 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 f45772eb69d6ed3cc23be40625411a75f9f32c9d --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: 1h 39m -> 2h 41m (+62.3%)
test-x86_64-gnu-gcc-core-tests: 11m 39s -> 18m 26s (+58.2%)
test-x86_64-gnu-miri: 1h 1m -> 1h 33m (+50.1%)
test-pr-check-1: 27m 19s -> 40m 59s (+50.0%)
dist-powerpc64le-linux-gnu: 1h 7m -> 1h 41m (+49.3%)
test-x86_64-gnu-stdlib-semver-check: 10m 53s -> 16m 2s (+47.3%)
test-x86_64-msvc-ext1: 1h 40m -> 2h 23m (+42.5%)
dist-i586-gnu-i586-i686-musl: 19m 22s -> 26m 46s (+38.2%)
test-x86_64-gnu-parallel-frontend: 1h 29m -> 1h 58m (+33.2%)
dist-x86_64-msvc: 2h -> 2h 39m (+33.0%)

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 · 2026-09-21T12:08:39Z

Finished benchmarking commit (f45772e): 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)	0.3%	[0.1%, 0.5%]	8
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.3%]	6
All ❌✅ (primary)	0.3%	[0.1%, 0.5%]	8

Max RSS (memory usage)

Results (secondary -2.5%)

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
Improvements ✅ (secondary)	-2.5%	[-2.5%, -2.5%]	1
All ❌✅ (primary)	-	-	0

Cycles

Results (primary 2.4%, secondary 19.6%)

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

	mean	range	count
Regressions ❌ (primary)	2.4%	[2.3%, 2.5%]	2
Regressions ❌ (secondary)	19.6%	[5.3%, 33.1%]	13
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	2.4%	[2.3%, 2.5%]	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%	[-0.2%, -0.0%]	80
Improvements ✅ (secondary)	-0.1%	[-0.2%, -0.0%]	57
All ❌✅ (primary)	-0.1%	[-0.2%, -0.0%]	80

Bootstrap: 499.144s -> 495.099s (-0.81%)
Artifact size: 408.93 MiB -> 409.61 MiB (0.16%)

rust-bors · 2026-09-21T12:32:08Z

📌 Perf builds for each rolled up PR:

PR#	Message	Perf Build Sha
#161051	When error from local macro, include macro def span	`57e3e66b1228b70d081c2f3990026140636067b5` (link)
#161629	Streamline `StateDiffCollector`	`73f1e7f69e2d71bed93a84a055161f897fd1ba4d` (link)
#162750	add case mapping fast paths for Latin-1	`97011e809823c27976e624b07f6b843d66cac4eb` (link)
#162831	Do not continue past `rustc_resolve` when encountering dupl…	`322f3aaac49d63a798125f4345a6b8239cf292b1` (link)
#162835	rustdoc: account for nested parens and split text events in…	`3d438c0da00d3e4f2b1bad3d239c3a6f45d9f4db` (link)
#162952	Depend on lockfiles to prevent GC of the current session	`854c002df6a3cf9def4d28163c5cf94ae15133c9` (link)
#163044	Report runtime range endpoints for runtime values	`adaffcaaaaf60fec940734d158287edae617ba9c` (link)
#163062	Use x30 register name with LLVM 23+	`dbcd41d19315c195349f8857953c2323ccf0f05f` (link)
#163091	miri subtree update	`07f97c3d43422726fcb00ac89d9b5dc0820d655c` (link)
#162939	Declare multi-kind constants for MacroKinds	`81c5801931c409dfc14e48bd1b42a28545fd0ea5` (link)
#162984	Windows: don't error if `access_mode` is set on `OpenOption…	`2e1684d004dcaea3e4a5290f687dbf434819ecb8` (link)
#163005	Avoid unreachable integer underflow check in `CStr::count_b…	`1d704feda397894195dbdef9392fd8fa5e674293` (link)
#163019	Prepare for the introduction of forced keywords (`k#`)	`20007c059832691522144f5dc8066976e05e70fe` (link)
#163020	Dir: fix fallback impl for remove_dir	`dcaafbe4d0cd1ace05a5e42998eb399d41cb8a61` (link)
#163041	Be more explicit on suggestion type without changing how th…	`b087cd53feffe29adadaf6adc2731dbe7a60665b` (link)
#163047	Use verbose suggestion for `mut binding` instead of `&mut b…	`32aadb6a2fd0e06d2468e5a1b7f3e49fe4ac8b36` (link)
#163075	Fix ArgAttributes mismatches in ABI UI tests for LoongArch6…	`0875aade04d259fd0d04b5caa1a76728b0bf065d` (link)
#163079	enable `f128` from `u64`/`i64` test	`d831932bd686d1a3f9e1190b487e1c7f44a6b7d5` (link)
#163082	Remove `TypeChecker::root_cx`	`906ea16078e3fe81a33e16b22b5f0491b96af710` (link)

parent commit: 220b36c420

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

JonathanBrouwer · 2026-09-21T12:34:44Z

@rust-timer triage all

rust-timer · 2026-09-21T12:34:49Z

Running triage with 3 benchmarks

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

deep-vector
include-blob
syn-2.0.101

#161051 `57e3e66` When error from local macro, include macro def span

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)	0.3%	[0.2%, 0.5%]	8
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.4%]	1
All ❌✅ (primary)	0.3%	[0.2%, 0.5%]	8

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.

#161629 `73f1e7f` Streamline `StateDiffCollector`

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
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.4%]	1
All ❌✅ (primary)	-	-	0

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.

#162750 `97011e8` add case mapping fast paths for Latin-1

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.

#162831 `322f3aa` Do not continue past `rustc_resolve` when encountering duplicated items

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
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.4%]	1
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.

#162835 `3d438c0` rustdoc: account for nested parens and split text events in bare urls 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
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.4%]	1
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

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%]	4
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-0.0%	[-0.0%, -0.0%]	4

#162952 `854c002` Depend on lockfiles to prevent GC of the current session

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
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.4%]	1
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.

#163044 `adaffca` Report runtime range endpoints for runtime values

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
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.4%]	1
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

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

Cycles

Results (secondary 2.5%)

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)	2.5%	[2.4%, 2.5%]	2
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Binary size

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

#163062 `dbcd41d` Use x30 register name with LLVM 23+

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
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.4%]	1
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.

#163091 `07f97c3` miri 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.

#162939 `81c5801` Declare multi-kind constants for MacroKinds

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
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.4%]	1
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

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

Cycles

Results (secondary 3.5%)

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)	3.5%	[3.5%, 3.5%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Binary size

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

#162984 `2e1684d` Windows: don't error if `access_mode` is set on `OpenOptions`

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 2.7%)

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.

#163005 `1d704fe` Avoid unreachable integer underflow check in `CStr::count_bytes()`

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
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.4%]	1
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.

#163019 `20007c0` Prepare for the introduction of forced keywords (`k#`)

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
Improvements ✅ (secondary)	-0.4%	[-0.5%, -0.3%]	5
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.

#163020 `dcaafbe` Dir: fix fallback impl for remove_dir

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.

#163041 `b087cd5` Be more explicit on suggestion type without changing how they are rendered

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
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.4%]	1
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

Results (secondary -1.6%)

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)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-1.6%	[-1.6%, -1.6%]	1
All ❌✅ (primary)	-	-	0

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.

#163047 `32aadb6` Use verbose suggestion for `mut binding` instead of `&mut binding`

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
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.4%]	1
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

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

Cycles

Results (secondary 3.4%)

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

Binary size

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

#163075 `0875aad` Fix ArgAttributes mismatches in ABI UI tests for LoongArch64 and RiscV64

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
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.4%]	1
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

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

Cycles

Results (secondary 2.8%)

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)	2.8%	[2.8%, 2.8%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Binary size

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

#163079 `d831932` enable `f128` from `u64`/`i64` test

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
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.4%]	1
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.

#163082 `906ea16` Remove `TypeChecker::root_cx`

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
Improvements ✅ (secondary)	-0.4%	[-0.4%, -0.4%]	1
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.

WhySoBad and others added 30 commits September 5, 2026 21:08

Manually set initial TCP socket readiness

2afd4ed

Because shimmed TCP sockets only receive host readiness events after `connect` or `listen` has been invoked, we need to manually set the initial readiness of a TCP socket.

Merge pull request rust-lang#5299 from WhySoBad/default-tcp-socket-re…

c967fc3

…adiness Manually set initial TCP socket readiness

Prepare for merging from rust-lang/rust

786d634

This updates the rust-version file to f248f40.

Merge pull request rust-lang#5309 from rust-lang/rustup-2026-09-06

3af1d65

Automatic Rustup

Prepare for merging from rust-lang/rust

9311482

This updates the rust-version file to 315ecf4.

fmt

34deffb

adjust CI: 32bit windows hosts are no more

2b85c28

Merge pull request rust-lang#5313 from rust-lang/rustup-2026-09-10

cbb4ec4

Automatic Rustup

use proper c_void for '*_' shim signatures

c301619

Merge pull request rust-lang#5315 from RalfJung/sig-ptr-types

83e06d3

use proper c_void for '*_' shim signatures

add case mapping fast paths for Latin-1

a451894

stop unleaking &muts

68963d8

Merge pull request rust-lang#5316 from maxdexh/unleak-considered-harmful

8545395

unleaking considered harmful

Prepare for merging from rust-lang/rust

a243cf4

This updates the rust-version file to c26ce70.

Merge pull request rust-lang#5317 from rust-lang/rustup-2026-09-15

2e1a970

Automatic Rustup

Account for split text events in bare urls lint

01da50f

Co-authored-by: malezjaa <poreba.kris@gmail.com>

Account for nested parens in bare urls lint

8e4f287

Prepare for merging from rust-lang/rust

0b34b6e

This updates the rust-version file to 923c95c.

Merge pull request rust-lang#5318 from rust-lang/rustup-2026-09-17

39a2977

Automatic Rustup

Account for the separator between host and path

459ba37

Account for URLs with accidental formatting

a83dd65

Introduce LockedDir type

27ed2ed

Revert "./miri toolchain: no need to run 'cargo metadata'"

c39609d

This reverts commit 8c704e3becec2da6d439c439f5a86a48c2e29427.

add issue reference for work-around

0d17901

rust-bors Bot added the rollup A PR which is a rollup label Sep 21, 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 21, 2026

rust-bors Bot mentioned this pull request Sep 21, 2026

When error from local macro, include macro def span #161051

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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 21, 2026

rust-bors Bot merged commit f45772e into rust-lang:main Sep 21, 2026
14 checks passed

rustbot added this to the 1.100.0 milestone Sep 21, 2026

This was referenced Sep 21, 2026

rustc_builtin_macros cleanup, part 5 #163080

Open

feat: support nested functions with #[offload_kernel] #163077

Open

Make the suggestion message of unused_must_use scarier. #162819

Open

Allow : after pat_param #162264

Open

rustbot added the perf-regression Performance regression. label Sep 21, 2026

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JonathanBrouwer commented Sep 21, 2026

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github-actions Bot commented Sep 21, 2026

Test differences

Stage 1

Stage 2

Job duration changes

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rust-timer commented Sep 21, 2026

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

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JonathanBrouwer commented Sep 21, 2026

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rust-timer commented Sep 21, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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#161051 57e3e66 When error from local macro, include macro def span

#161629 73f1e7f Streamline StateDiffCollector

#162750 97011e8 add case mapping fast paths for Latin-1

#162831 322f3aa Do not continue past rustc_resolve when encountering duplicated items

#162835 3d438c0 rustdoc: account for nested parens and split text events in bare urls lint

#162952 854c002 Depend on lockfiles to prevent GC of the current session

#163044 adaffca Report runtime range endpoints for runtime values

#163062 dbcd41d Use x30 register name with LLVM 23+

#163091 07f97c3 miri subtree update

#162939 81c5801 Declare multi-kind constants for MacroKinds

#162984 2e1684d Windows: don't error if access_mode is set on OpenOptions

#163005 1d704fe Avoid unreachable integer underflow check in CStr::count_bytes()

#163019 20007c0 Prepare for the introduction of forced keywords (k#)

#163020 dcaafbe Dir: fix fallback impl for remove_dir

#163041 b087cd5 Be more explicit on suggestion type without changing how they are rendered

#163047 32aadb6 Use verbose suggestion for mut binding instead of &mut binding

#163075 0875aad Fix ArgAttributes mismatches in ABI UI tests for LoongArch64 and RiscV64

#163079 d831932 enable f128 from u64/i64 test

#163082 906ea16 Remove TypeChecker::root_cx

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rust-timer commented Sep 21, 2026 •

edited

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#161051 `57e3e66` When error from local macro, include macro def span

#161629 `73f1e7f` Streamline `StateDiffCollector`

#162750 `97011e8` add case mapping fast paths for Latin-1

#162831 `322f3aa` Do not continue past `rustc_resolve` when encountering duplicated items

#162835 `3d438c0` rustdoc: account for nested parens and split text events in bare urls lint

#162952 `854c002` Depend on lockfiles to prevent GC of the current session

#163044 `adaffca` Report runtime range endpoints for runtime values

#163062 `dbcd41d` Use x30 register name with LLVM 23+

#163091 `07f97c3` miri subtree update

#162939 `81c5801` Declare multi-kind constants for MacroKinds

#162984 `2e1684d` Windows: don't error if `access_mode` is set on `OpenOptions`

#163005 `1d704fe` Avoid unreachable integer underflow check in `CStr::count_bytes()`

#163019 `20007c0` Prepare for the introduction of forced keywords (`k#`)

#163020 `dcaafbe` Dir: fix fallback impl for remove_dir

#163041 `b087cd5` Be more explicit on suggestion type without changing how they are rendered

#163047 `32aadb6` Use verbose suggestion for `mut binding` instead of `&mut binding`

#163075 `0875aad` Fix ArgAttributes mismatches in ABI UI tests for LoongArch64 and RiscV64

#163079 `d831932` enable `f128` from `u64`/`i64` test

#163082 `906ea16` Remove `TypeChecker::root_cx`