Rollup of 25 pull requests by JonathanBrouwer · Pull Request #162229 · rust-lang/rust

JonathanBrouwer · 2026-09-03T10:43:14Z

Successful merges:

add Complex ABI run-make test #161694 (add Complex ABI run-make test)
Move more rustdoc-html tests using --test into the right folder #162014 (Move more rustdoc-html tests using --test into the right folder)
Revert "Implement Debug for C-like enums with a concatenated string" #162164 (Revert "Implement Debug for C-like enums with a concatenated string")
volatile: allow accesses to non-AM memory to trap #160564 (volatile: allow accesses to non-AM memory to trap)
suggest calling a fn item used as the iterator of a for loop #161579 (suggest calling a fn item used as the iterator of a for loop)
coverage: Resolve spans to file-coordinates in a separate step #162044 (coverage: Resolve spans to file-coordinates in a separate step)
Introduce PerOwnerLoweringState #162120 (Introduce PerOwnerLoweringState)
std: improve safety documentation in UNIX stack overflow code #162132 (std: improve safety documentation in UNIX stack overflow code)
Test itanium mangling of f16 and f128 #162151 (Test itanium mangling of f16 and f128)
Don't special-case ! in stability checks anymore #162162 (Don't special-case ! in stability checks anymore)
Remove wrong UnusedBraces lint for iterator loop in edition 2024 #162181 (Remove wrong UnusedBraces lint for iterator loop in edition 2024 )
Rename thir::ExprKind::Use to ValueExpr #162187 (Rename thir::ExprKind::Use to ValueExpr)
mgca: Don't ICE when evaluating ValTrees that contain error constants #158401 (mgca: Don't ICE when evaluating ValTrees that contain error constants)
fuchsia: Add safestack as a supported sanitizer for x86_64 fuchsia #159873 (fuchsia: Add safestack as a supported sanitizer for x86_64 fuchsia)
Add f16 and f128 inline ASM support for PowerPC #161135 (Add f16 and f128 inline ASM support for PowerPC)
Preserve visibility in nested macro import suggestions #161847 (Preserve visibility in nested macro import suggestions)
Improve tests for #[track_caller] in async #161972 (Improve tests for #[track_caller] in async)
Render the box pattern removal diagnostic more actionable & remove box expression recovery #162008 (Render the box pattern removal diagnostic more actionable & remove box expression recovery)
std: don't reference libc::O_NOFOLLOW on VxWorks in set_perm_nofollow #162065 (std: don't reference libc::O_NOFOLLOW on VxWorks in set_perm_nofollow)
docs(num): clarify conditions under which error occurs in impl TryFrom<int> for int #162076 (docs(num): clarify conditions under which error occurs in impl TryFrom<int> for int)
Update mailmap for Will Crichton and Petr Hosek #162111 (Update mailmap for Will Crichton and Petr Hosek)
Revert "retrieve supported GCC targets from the sysroot" #162152 (Revert "retrieve supported GCC targets from the sysroot")
Prefer LLVMGetVersion for runtime info #162153 (Prefer LLVMGetVersion for runtime info)
fix ICE in project_goals/inherent #162168 (fix ICE in project_goals/inherent)
Explain LoongArch f16 NaN-boxing in inline asm #162171 (Explain LoongArch f16 NaN-boxing in inline asm)

Previously, these tests were testing the wrong feature gate, and had unnecessary type errors.

This is done so that we can test whether the location used is at the function call site or the await site.

Co-authored-by: Ralf Jung <post@ralfj.de>

- Rename `generate_*` functions to `emit_*`, since they emit LLVM globals - Consistently use qualified paths in `counter_for_term` - Remove an unnecessary Clone from `llvm_cov::Regions`

One of the key tasks in coverage codegen is to take the source-code spans that were recorded during MIR instrumentation, and resolve them to physical coordinates in their respective files. In rare cases this resolution can fail, which leads to the awkward possibility that a function might lose _all_ of its mappings for a particular file/expansion. If that happens, we need to avoid emitting a covfun file section containing no regions, because doing so would trigger errors in LLVM. The existing code does handle this edge case, but in a way that won't generalise to multiple files/expansions. Having an explicit intermediate resolution step will make it easier to add support for expansion regions in the future.

`suggest_fn_call` only fired when the failing obligation came from `ObligationCauseCode::FunctionArg`, so a fn item or closure used as the iterator of a `for` loop got no structured suggestion to call it. the iterator of a `for` loop is passed to `IntoIterator::into_iter`, so the failing `Iterator` goal is a derived obligation and the cause span carries the loop desugaring, which makes `can_be_used_for_suggestions` return false. carry the `HirId` of the iterator expression in `ObligationCauseCode::ForLoopIterator` and gate the suggestion on the span of that expression instead. rust-lang#161564

dereferencing an uncalled function only said the function type cannot be dereferenced. it now suggests the call, gated on the return type actually being dereferenceable. rust-lang#161564 (comment)

…low` VxWorks' libc defines no `O_NOFOLLOW`, so building std for x86_64-wrs-vxworks stopped compiling once `set_perm_nofollow` was consolidated into `sys/fs/unix.rs` without a vxworks guard. VxWorks also has no way to express a no-follow permission change: its `fchmodat` rejects `AT_SYMLINK_NOFOLLOW` with `ENOTSUP`. Return `Unsupported`, matching the existing Android stub.

Make it also enabled by default just like it is for clang.

Our `LLVMRustVersion*` functions get hard-coded `LLVM_VERSION_*` values when we build `RustWrapper.cpp`, but this could be different than the actual LLVM library at runtime. This should never happen with toolchains from `rustup`, but with external LLVM in a distro build, for example, `rustc` and `LLVM` can be upgraded independently. Most of the time when we check the LLVM version, we're only looking at the major version anyway, and we already assert that these are equal in `configure_llvm`. However, for anything that does check the minor or patch version too, the runtime version is probably more relevant.

This reverts commit 5a5b84a.

github-actions · 2026-09-03T16:47:49Z

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 d8df826 (parent) -> c33d8f3 (this PR)

Test differences

Show 307 test diffs

Stage 1

[ui (polonius)] tests/ui/async-await/track-caller/async-block.rs#afn_cls: [missing] -> pass (J0)
[ui (polonius)] tests/ui/async-await/track-caller/async-block.rs#cls: [missing] -> pass (J0)
[ui (polonius)] tests/ui/async-await/track-caller/async-closure-gate.rs#afn_cls: [missing] -> pass (J0)
[ui (polonius)] tests/ui/async-await/track-caller/async-closure-gate.rs#cls: [missing] -> pass (J0)
[ui (polonius)] tests/ui/async-await/track-caller/panic-track-caller.rs#afn_cls: [missing] -> pass (J0)
[ui (polonius)] tests/ui/const-generics/generic_const_parameter_types/inherent-type-const.rs: pass -> [missing] (J0)
[ui (polonius)] tests/ui/const-generics/generic_const_parameter_types/inherent-type-const.rs#old: [missing] -> pass (J0)
[ui (polonius)] tests/ui/const-generics/mgca/none-as-usize-const-arg.rs: [missing] -> pass (J0)
[ui (polonius)] tests/ui/imports/macro-export-nested-import-visibility-issue-141134.rs: [missing] -> pass (J0)
[ui (polonius)] tests/ui/lint/unused-braces-for-iterator-temp-scope-issue-160741.rs#e2021: [missing] -> pass (J0)
[ui (polonius)] tests/ui/lint/unused-braces-for-iterator-temp-scope-issue-160741.rs#e2024: [missing] -> pass (J0)
[ui (polonius)] tests/ui/parser/box-can-begin-expr.rs: [missing] -> pass (J0)
[ui (polonius)] tests/ui/parser/removed-syntax/removed-syntax-uniq-mut-expr.rs: pass -> [missing] (J0)
[ui (polonius)] tests/ui/suggestions/suggest-calling-fn-in-for-loop-issue-161564.rs: [missing] -> pass (J0)
[assembly] tests/assembly-llvm/asm/powerpc-types.rs#powerpc64_power9: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 22.0.0) (J1)
[assembly] tests/assembly-llvm/asm/powerpc-types.rs#powerpc64_vsx: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 22.0.0) (J1)
[assembly] tests/assembly-llvm/asm/powerpc-types.rs#powerpc64le: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 22.0.0) (J1)
[assembly] tests/assembly-llvm/asm/powerpc-types.rs#powerpc_vsx: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 22.0.0) (J1)
[assembly] tests/assembly-llvm/stack-protector/stack-protector-heuristics-effect-2.rs#all: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 23.0.0) (J1)
[codegen] tests/codegen-llvm/i128-x86-align.rs: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 23.0.0) (J1)
[codegen] tests/codegen-llvm/intrinsics/volatile.rs: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 23.0.0) (J1)
[ui] tests/ui/async-await/track-caller/async-closure-gate.rs#afn_cls: [missing] -> pass (J5)
[ui] tests/ui/const-generics/generic_const_parameter_types/inherent-type-const.rs: pass -> [missing] (J5)
[ui] tests/ui/const-generics/generic_const_parameter_types/inherent-type-const.rs#next: [missing] -> pass (J5)
[ui] tests/ui/imports/macro-export-nested-import-visibility-issue-141134.rs: [missing] -> pass (J5)
[ui] tests/ui/lint/unused-braces-for-iterator-temp-scope-issue-160741.rs#e2024: [missing] -> pass (J5)
[ui] tests/ui/parser/box-can-begin-expr.rs: [missing] -> pass (J5)
[ui] tests/ui/parser/removed-syntax/removed-syntax-box.rs: pass -> [missing] (J5)
[ui] tests/ui/parser/removed-syntax/removed-syntax-uniq-mut-expr.rs: pass -> [missing] (J5)
[ui] tests/ui/suggestions/suggest-calling-fn-in-deref-issue-161564.rs: [missing] -> pass (J5)
[ui] tests/ui/suggestions/suggest-calling-fn-in-for-loop-issue-161564.rs: [missing] -> pass (J5)
[run-make] tests/run-make/complex-abi: [missing] -> pass (J6)
[rustdoc-html] tests/rustdoc-html/demo-allocator-54478.rs: pass -> [missing] (J6)
[rustdoc-html] tests/rustdoc-html/doc-test-attr-18199.rs: pass -> [missing] (J6)
[rustdoc-html] tests/rustdoc-html/edition-flag.rs: pass -> [missing] (J6)
[rustdoc-html] tests/rustdoc-html/no-run-still-checks-lints.rs: pass -> [missing] (J6)
[rustdoc-html] tests/rustdoc-html/test_option_check/test.rs: pass -> [missing] (J6)
[ui] tests/rustdoc-ui/doctest/demo-allocator-54478.rs: [missing] -> pass (J6)
[ui] tests/rustdoc-ui/doctest/doc-cfg-target-feature.rs: [missing] -> pass (J6)
[ui] tests/rustdoc-ui/doctest/edition-doctest.rs: [missing] -> pass (J6)
[ui] tests/rustdoc-ui/doctest/edition-flag.rs: [missing] -> pass (J6)
[ui] tests/rustdoc-ui/doctest/force-target-feature.rs: [missing] -> pass (J6)
[ui] tests/rustdoc-ui/doctest/process-termination.rs: [missing] -> pass (J6)
[ui] tests/rustdoc-ui/doctest/sanitizer-option.rs: [missing] -> ignore (ignored on targets without sanitizers support) (J6)
[ui] tests/rustdoc-ui/doctest/test-option-check-2.rs: [missing] -> pass (J6)
[assembly] tests/assembly-llvm/stack-protector/stack-protector-heuristics-effect-2.rs#missing: pass -> ignore (ignored when the LLVM version 22.1.2 is older than 23.0.0) (J11)
[assembly] tests/assembly-llvm/stack-protector/stack-protector-heuristics-effect-2.rs#strong: pass -> ignore (ignored when the LLVM version 22.1.2 is older than 23.0.0) (J11)
[codegen] tests/codegen-llvm/i128-x86-align.rs: pass -> ignore (ignored when the LLVM version 22.1.2 is older than 23.0.0) (J11)

Stage 2

[rustdoc-html] tests/rustdoc-html/demo-allocator-54478.rs: pass -> [missing] (J2)
[rustdoc-html] tests/rustdoc-html/doc-test-attr-18199.rs: pass -> [missing] (J2)
[rustdoc-html] tests/rustdoc-html/edition-doctest.rs: pass -> [missing] (J2)
[rustdoc-html] tests/rustdoc-html/edition-flag.rs: pass -> [missing] (J2)
[rustdoc-html] tests/rustdoc-html/ice-type-error-19181.rs: pass -> [missing] (J2)
[rustdoc-html] tests/rustdoc-html/process-termination.rs: pass -> [missing] (J2)
[rustdoc-html] tests/rustdoc-html/test_option_check/bar.rs: pass -> [missing] (J2)
[rustdoc-html] tests/rustdoc-html/test_option_check/test.rs: pass -> [missing] (J2)
[ui] tests/rustdoc-ui/doctest/demo-allocator-54478.rs: [missing] -> pass (J2)
[ui] tests/rustdoc-ui/doctest/edition-doctest.rs: [missing] -> pass (J2)
[ui] tests/rustdoc-ui/doctest/edition-flag.rs: [missing] -> pass (J2)
[ui] tests/rustdoc-ui/doctest/ice-type-error-19181.rs: [missing] -> pass (J2)
[ui] tests/rustdoc-ui/doctest/no-run-still-checks-lints.rs: [missing] -> pass (J2)
[ui] tests/rustdoc-ui/doctest/process-termination.rs: [missing] -> pass (J2)
[ui] tests/rustdoc-ui/doctest/test-option-check-2.rs: [missing] -> pass (J2)
[run-make] tests/run-make/complex-abi: [missing] -> pass (J3)
[rustdoc-html] tests/rustdoc-html/sanitizer-option.rs: ignore (ignored on targets without address sanitizer) -> [missing] (J4)
[ui] tests/rustdoc-ui/doctest/sanitizer-option.rs: [missing] -> ignore (ignored on targets without address sanitizer) (J4)
[crashes] tests/crashes/150969.rs: pass -> [missing] (J7)
[ui] tests/ui/async-await/track-caller/async-closure-gate.rs#cls: [missing] -> pass (J8)
[ui] tests/ui/const-generics/generic_const_parameter_types/inherent-type-const.rs#next: [missing] -> pass (J8)
[ui] tests/ui/const-generics/mgca/none-as-usize-const-arg.rs: [missing] -> pass (J8)
[ui] tests/ui/const-generics/mgca/type_const-adt-expr-missing-field.rs: [missing] -> pass (J8)
[ui] tests/ui/imports/macro-export-nested-import-visibility-issue-141134.rs: [missing] -> pass (J8)
[ui] tests/ui/parser/box-can-begin-expr.rs: [missing] -> pass (J8)
[ui] tests/ui/parser/removed-syntax/removed-syntax-box.rs: pass -> [missing] (J8)
[ui] tests/ui/parser/removed-syntax/removed-syntax-uniq-mut-expr.rs: pass -> [missing] (J8)
[ui] tests/ui/suggestions/suggest-calling-fn-in-deref-issue-161564.rs: [missing] -> pass (J8)
[assembly] tests/assembly-llvm/stack-protector/stack-protector-heuristics-effect-2.rs#all: pass -> ignore (ignored when the LLVM version 22.1.2 is older than 23.0.0) (J9)
[assembly] tests/assembly-llvm/stack-protector/stack-protector-heuristics-effect-2.rs#missing: pass -> ignore (ignored when the LLVM version 22.1.2 is older than 23.0.0) (J9)
[assembly] tests/assembly-llvm/stack-protector/stack-protector-heuristics-effect-2.rs#none: pass -> ignore (ignored when the LLVM version 22.1.2 is older than 23.0.0) (J9)
[codegen] tests/codegen-llvm/i128-x86-align.rs: pass -> ignore (ignored when the LLVM version 22.1.2 is older than 23.0.0) (J9)
[assembly] tests/assembly-llvm/asm/powerpc-types.rs#powerpc: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 22.0.0) (J10)
[assembly] tests/assembly-llvm/asm/powerpc-types.rs#powerpc64_power9: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 22.0.0) (J10)
[assembly] tests/assembly-llvm/asm/powerpc-types.rs#powerpc64_vsx: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 22.0.0) (J10)
[assembly] tests/assembly-llvm/asm/powerpc-types.rs#powerpc64le: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 22.0.0) (J10)
[assembly] tests/assembly-llvm/asm/powerpc-types.rs#powerpc64le_power9: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 22.0.0) (J10)
[assembly] tests/assembly-llvm/asm/powerpc-types.rs#powerpc_power9: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 22.0.0) (J10)
[assembly] tests/assembly-llvm/stack-protector/stack-protector-heuristics-effect-2.rs#all: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 23.0.0) (J10)
[assembly] tests/assembly-llvm/stack-protector/stack-protector-heuristics-effect-2.rs#missing: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 23.0.0) (J10)
[assembly] tests/assembly-llvm/stack-protector/stack-protector-heuristics-effect-2.rs#strong: pass -> ignore (ignored when the LLVM version 21.1.2 is older than 23.0.0) (J10)
[rustdoc-html] tests/rustdoc-html/doc-cfg/doc-cfg-target-feature.rs: ignore (only executed when the architecture is x86_64) -> [missing] (J12)
[rustdoc-html] tests/rustdoc-html/force-target-feature.rs: ignore (only executed when the architecture is x86_64) -> [missing] (J12)
[ui] tests/ui/async-await/track-caller/panic-track-caller.rs#afn_cls: [missing] -> ignore (gcc backend is marked as ignore) (J13)
[run-make] tests/run-make/complex-abi: [missing] -> ignore (ignored when the target environment is msvc (_Complex is not supported by msvc)) (J14)
[ui] tests/rustdoc-ui/doctest/doc-cfg-target-feature.rs: [missing] -> ignore (only executed when the architecture is x86_64) (J15)
[ui] tests/rustdoc-ui/doctest/doc-cfg-target-feature.rs: [missing] -> pass (J16)
[ui] tests/ui/async-await/track-caller/panic-track-caller.rs#afn_cls: [missing] -> pass (J17)
[codegen] tests/codegen-llvm/i128-x86-align.rs: ignore (only executed when the architecture is x86_64) -> ignore (ignored when the LLVM version 21.1.2 is older than 23.0.0) (J18)
[rustdoc-html] tests/rustdoc-html/sanitizer-option.rs: pass -> [missing] (J19)
[ui] tests/rustdoc-ui/doctest/sanitizer-option.rs: [missing] -> ignore (ignored on targets without sanitizers support) (J20)
[rustdoc-html] tests/rustdoc-html/force-target-feature.rs: pass -> [missing] (J21)

(and 73 additional test diffs)

Additionally, 134 doctest diffs were found. These are ignored, as they are noisy.

Job group index

J0: x86_64-gnu-next-trait-solver-polonius
J1: x86_64-gnu-llvm-21-3
J2: aarch64-apple-1, aarch64-apple-macos-26-1, aarch64-gnu, aarch64-gnu-llvm-21-1, aarch64-msvc-1, i686-gnu-1, i686-gnu-nopt-1, i686-msvc-1, x86_64-gnu, x86_64-gnu-llvm-21-2, x86_64-gnu-llvm-22-2, x86_64-gnu-nopt, x86_64-gnu-stable, x86_64-mingw-1, x86_64-msvc-1
J3: aarch64-apple-1, aarch64-apple-macos-26-1, aarch64-gnu, aarch64-gnu-debug, aarch64-gnu-llvm-21-1, armhf-gnu, i686-gnu-1, i686-gnu-nopt-1, test-various, x86_64-gnu, x86_64-gnu-debug, x86_64-gnu-gcc, x86_64-gnu-llvm-21-2, x86_64-gnu-llvm-22-2, x86_64-gnu-nopt, x86_64-gnu-stable, x86_64-mingw-1
J4: aarch64-msvc-1, x86_64-mingw-1
J5: x86_64-gnu-llvm-21-3, x86_64-gnu-llvm-22-3, x86_64-gnu-next-trait-solver-polonius
J6: x86_64-gnu-llvm-21-3, x86_64-gnu-llvm-22-3
J7: aarch64-apple-1, aarch64-apple-macos-26-1, aarch64-gnu, aarch64-gnu-llvm-21-1, aarch64-msvc-1, arm-android, armhf-gnu, i686-gnu-1, i686-gnu-nopt-1, i686-msvc-1, test-various, x86_64-gnu, x86_64-gnu-gcc, x86_64-gnu-llvm-21-2, x86_64-gnu-llvm-22-2, x86_64-gnu-nopt, x86_64-gnu-stable, x86_64-mingw-1, x86_64-msvc-1
J8: aarch64-apple-1, aarch64-apple-macos-26-1, aarch64-gnu, aarch64-gnu-llvm-21-1, aarch64-msvc-1, arm-android, armhf-gnu, i686-gnu-1, i686-gnu-nopt-1, i686-msvc-1, test-various, x86_64-gnu, x86_64-gnu-debug, x86_64-gnu-gcc, x86_64-gnu-llvm-21, x86_64-gnu-llvm-21-2, x86_64-gnu-llvm-22-2, x86_64-gnu-nopt, x86_64-gnu-parallel-frontend, x86_64-gnu-stable, x86_64-mingw-1, x86_64-msvc-1
J9: x86_64-gnu-llvm-22-2
J10: aarch64-gnu-llvm-21-1, x86_64-gnu-llvm-21-2
J11: x86_64-gnu-llvm-22-3
J12: aarch64-apple-1, aarch64-apple-macos-26-1, aarch64-gnu, aarch64-gnu-llvm-21-1, aarch64-msvc-1, i686-gnu-1, i686-gnu-nopt-1, i686-msvc-1
J13: x86_64-gnu-gcc
J14: aarch64-msvc-1, i686-msvc-1, x86_64-msvc-1
J15: aarch64-gnu, aarch64-gnu-llvm-21-1, i686-gnu-1, i686-gnu-nopt-1
J16: x86_64-gnu, x86_64-gnu-llvm-21-2, x86_64-gnu-llvm-22-2, x86_64-gnu-nopt, x86_64-gnu-stable
J17: aarch64-apple-1, aarch64-apple-macos-26-1, aarch64-gnu, aarch64-gnu-llvm-21-1, aarch64-msvc-1, arm-android, armhf-gnu, i686-gnu-1, i686-gnu-nopt-1, i686-msvc-1, test-various, x86_64-gnu, x86_64-gnu-debug, x86_64-gnu-llvm-21, x86_64-gnu-llvm-21-2, x86_64-gnu-llvm-22-2, x86_64-gnu-nopt, x86_64-gnu-parallel-frontend, x86_64-gnu-stable, x86_64-mingw-1, x86_64-msvc-1
J18: aarch64-gnu-llvm-21-1
J19: aarch64-apple-1, aarch64-apple-macos-26-1, aarch64-gnu, i686-msvc-1, x86_64-gnu, x86_64-gnu-stable, x86_64-msvc-1
J20: aarch64-gnu-llvm-21-1, i686-gnu-1, i686-gnu-nopt-1, x86_64-gnu-llvm-21-2, x86_64-gnu-llvm-22-2, x86_64-gnu-nopt
J21: x86_64-gnu, x86_64-gnu-llvm-21-2, x86_64-gnu-llvm-22-2, x86_64-gnu-nopt, x86_64-gnu-stable, x86_64-mingw-1, x86_64-msvc-1

Test dashboard

Run

cargo run --manifest-path src/ci/citool/Cargo.toml -- \
    test-dashboard c33d8f3b5a50b56466998e8c5ed8a077d2caed84 --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

x86_64-gnu-llvm-21-3: 1h 20m -> 1h 59m (+47.9%)
x86_64-gnu-nopt: 1h 40m -> 2h 27m (+46.6%)
x86_64-gnu-aux: 1h 53m -> 2h 36m (+38.0%)
x86_64-gnu-llvm-22-3: 1h 24m -> 1h 52m (+34.1%)
x86_64-gnu-debug: 2h 12m -> 1h 29m (-32.1%)
x86_64-gnu-miri: 1h 30m -> 1h 1m (-32.1%)
dist-powerpc64-linux-gnu: 1h 17m -> 1h 39m (+29.5%)
dist-x86_64-musl: 1h 50m -> 2h 23m (+29.4%)
optional-x86_64-gnu-autodiff: 57m 33s -> 41m 2s (-28.7%)
x86_64-gnu-parallel-frontend: 1h 36m -> 2h 2m (+27.5%)

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 · 2026-09-03T18:02:35Z

Finished benchmarking commit (c33d8f3): comparison URL.

Overall result: ❌ regressions - 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

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JonathanBrouwer commented Sep 3, 2026

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github-actions Bot commented Sep 3, 2026

Test differences

Stage 1

Stage 2

Job duration changes

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rust-timer commented Sep 3, 2026

Overall result: ❌ regressions - please read:

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rust-bors Bot commented Sep 3, 2026

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JonathanBrouwer commented Sep 3, 2026

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rust-timer commented Sep 3, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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#161694 6357c99 add Complex ABI run-make test

#162014 9bee7a6 Move more rustdoc-html tests using --test into the right folder

#162164 a056d7d Revert "Implement Debug for C-like enums with a concatenated string"

#160564 0181ab7 volatile: allow accesses to non-AM memory to trap

#161579 6e36ad0 suggest calling a fn item used as the iterator of a for loop

#162044 a88204a coverage: Resolve spans to file-coordinates in a separate step

#162120 aab8785 Introduce PerOwnerLoweringState

#162132 6d17148 std: improve safety documentation in UNIX stack overflow code

#162151 f599bb4 Test itanium mangling of f16 and f128

#162162 89bb80f Don't special-case ! in stability checks anymore

#162181 8dcf23a Remove wrong UnusedBraces lint for iterator loop in edition 2024

#162187 e6ec71a Rename thir::ExprKind::Use to ValueExpr

#158401 3b029aa mgca: Don't ICE when evaluating ValTrees that contain error constants

#159873 0d43798 fuchsia: Add safestack as a supported sanitizer for x86_64 fuchsia

#161135 6b98390 Add f16 and f128 inline ASM support for PowerPC

#161847 a98e57d Preserve visibility in nested macro import suggestions

#161972 4f2b81d Improve tests for #[track_caller] in async

#162008 8dc4d92 Render the box pattern removal diagnostic more actionable & remove box expression recovery

#162065 c1f0df6 std: don't reference libc::O_NOFOLLOW on VxWorks in set_perm_nofollow

#162076 fcd65ae docs(num): clarify conditions under which error occurs in impl TryFrom<int> for int

#162111 ffe8942 Update mailmap for Will Crichton and Petr Hosek

#162152 930ad1a Revert "retrieve supported GCC targets from the sysroot"

#162153 8d31877 Prefer LLVMGetVersion for runtime info

#162168 434df5a fix ICE in project_goals/inherent

#162171 7eecd28 Explain LoongArch f16 NaN-boxing in inline asm

rust-timer commented Sep 3, 2026 •

edited

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#161694 `6357c99` add `Complex` ABI run-make test

#162014 `9bee7a6` Move more `rustdoc-html` tests using `--test` into the right folder

#162164 `a056d7d` Revert "Implement Debug for C-like enums with a concatenated string"

#160564 `0181ab7` volatile: allow accesses to non-AM memory to trap

#161579 `6e36ad0` suggest calling a fn item used as the iterator of a `for` loop

#162044 `a88204a` coverage: Resolve spans to file-coordinates in a separate step

#162120 `aab8785` Introduce `PerOwnerLoweringState`

#162132 `6d17148` std: improve safety documentation in UNIX stack overflow code

#162151 `f599bb4` Test itanium mangling of `f16` and `f128`

#162162 `89bb80f` Don't special-case `!` in stability checks anymore

#162181 `8dcf23a` Remove wrong UnusedBraces lint for iterator loop in edition 2024

#162187 `e6ec71a` Rename `thir::ExprKind::Use` to `ValueExpr`

#158401 `3b029aa` mgca: Don't ICE when evaluating ValTrees that contain error constants

#159873 `0d43798` fuchsia: Add safestack as a supported sanitizer for x86_64 fuchsia

#161135 `6b98390` Add `f16` and `f128` inline ASM support for PowerPC

#161847 `a98e57d` Preserve visibility in nested macro import suggestions

#161972 `4f2b81d` Improve tests for `#[track_caller]` in async

#162008 `8dc4d92` Render the `box` pattern removal diagnostic more actionable & remove `box` expression recovery

#162065 `c1f0df6` std: don't reference `libc::O_NOFOLLOW` on VxWorks in `set_perm_nofollow`

#162076 `fcd65ae` docs(num): clarify conditions under which error occurs in `impl TryFrom<int> for int`

#162111 `ffe8942` Update mailmap for Will Crichton and Petr Hosek

#162152 `930ad1a` Revert "retrieve supported GCC targets from the sysroot"

#162153 `8d31877` Prefer `LLVMGetVersion` for runtime info

#162168 `434df5a` fix ICE in project_goals/inherent

#162171 `7eecd28` Explain LoongArch f16 NaN-boxing in inline asm