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mGCA: Move tests for assoc const bindings (formerly ACE) into dedicated directory & replace more mentions of ACE#150844

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fmease:mv-ace-tests
Jan 12, 2026
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mGCA: Move tests for assoc const bindings (formerly ACE) into dedicated directory & replace more mentions of ACE#150844
rust-bors[bot] merged 2 commits intorust-lang:mainfrom
fmease:mv-ace-tests

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@fmease fmease commented Jan 8, 2026 •
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Split out of PR #150843.
As discussed.

Somewhat obvious underlying principle: If the test checks basic or core parts of assoc const bindings and nothing else, move it, otherwise leave it even if it contains ACEs.

Motivation: It makes a lot easier for me to continue working on ACE efficiently.

r? @BoxyUwU

@rustbot rustbot added A-tidy Area: The tidy tool S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Jan 8, 2026
@fmease fmease changed the title Move tests for assoc const bindings (mGCA, fmr. ACE) into dedicated directory & replace more mentions of ACE mGCA: Move tests for assoc const bindings (fmr. ACE) into dedicated directory & replace more mentions of ACE Jan 8, 2026
@fmease fmease changed the title mGCA: Move tests for assoc const bindings (fmr. ACE) into dedicated directory & replace more mentions of ACE mGCA: Move tests for assoc const bindings (formerly ACE) into dedicated directory & replace more mentions of ACE Jan 8, 2026
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BoxyUwU commented Jan 9, 2026

@bors r+ rollup=never

@rust-bors 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 Jan 9, 2026
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📌 Commit b144a11 has been approved by BoxyUwU

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@rust-bors 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 Jan 12, 2026
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☀️ Test successful - CI
Approved by: BoxyUwU
Pushing 2f1bd3f to main...

@rust-bors rust-bors bot merged commit 2f1bd3f into rust-lang:main Jan 12, 2026
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@rustbot rustbot added this to the 1.94.0 milestone Jan 12, 2026
@fmease fmease deleted the mv-ace-tests branch January 12, 2026 23:47
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github-actions bot commented Jan 12, 2026

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 aefa104 (parent) -> 2f1bd3f (this PR)

Test differences

Show 106 test diffs

Stage 1

  • [ui] tests/ui/associated-consts/assoc-const-eq-ambiguity.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/assoc-const-eq-bound-var-in-ty-not-wf.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/assoc-const-eq-bound-var-in-ty.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/assoc-const-eq-const_evaluatable_unchecked.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/assoc-const-eq-esc-bound-var-in-ty.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/assoc-const-eq-missing.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/assoc-const-eq-param-in-ty.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/assoc-const-eq-supertraits.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/assoc-const-eq-ty-alias-noninteracting.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/assoc-const-ty-mismatch.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/assoc-const.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/equality-unused-issue-126729.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/issue-102335-const.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/issue-105330.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/issue-93835.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-consts/projection-unspecified-but-bounded.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-type-bounds/const-projection-err.rs: pass -> [missing] (J1)
  • [ui] tests/ui/associated-type-bounds/issue-99828.rs: pass -> [missing] (J1)
  • [ui] tests/ui/const-generics/assoc_const_eq_diagnostic.rs: pass -> [missing] (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/ambiguity.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/assoc-const-ty-mismatch.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/assoc-const.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/bound-var-in-ty-not-wf.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/bound-var-in-ty.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/coexisting-with-type-binding.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/coherence.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/const-bound-to-assoc-ty-99828.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/const-projection-err.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/const_evaluatable_unchecked.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/equality-unused-issue-126729.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/equality_bound_with_infer.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/esc-bound-var-in-ty.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/issue-102335-const.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/issue-105330.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/issue-93835.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/mismatched-types-with-generic-in-ace-no-feature-gate.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/mismatched-types-with-generic-in-ace.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/missing.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/param-in-ty.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/projection-unspecified-but-bounded.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/supertraits.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/unbraced-enum-variant.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/unconstrained_impl_param.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated-const-bindings/using-fnptr-as-type_const.rs: [missing] -> pass (J1)
  • [ui] tests/ui/const-generics/associated_const_equality/coherence.rs: pass -> [missing] (J1)
  • [ui] tests/ui/const-generics/associated_const_equality/equality_bound_with_infer.rs: pass -> [missing] (J1)
  • [ui] tests/ui/const-generics/associated_const_equality/mismatched-types-with-generic-in-ace-no-feature-gate.rs: pass -> [missing] (J1)
  • [ui] tests/ui/const-generics/associated_const_equality/mismatched-types-with-generic-in-ace.rs: pass -> [missing] (J1)
  • [ui] tests/ui/const-generics/associated_const_equality/unconstrained_impl_param.rs: pass -> [missing] (J1)
  • [ui] tests/ui/const-generics/mgca/using-fnptr-as-type_const.rs: pass -> [missing] (J1)
  • [ui] tests/ui/generic-const-items/assoc-const-bindings.rs: [missing] -> pass (J1)
  • [ui] tests/ui/generic-const-items/associated-const-equality.rs: pass -> [missing] (J1)

Stage 2

  • [ui] tests/ui/associated-consts/assoc-const-eq-ambiguity.rs: pass -> [missing] (J0)
  • [ui] tests/ui/associated-consts/assoc-const-eq-bound-var-in-ty-not-wf.rs: pass -> [missing] (J0)
  • [ui] tests/ui/associated-consts/assoc-const-eq-bound-var-in-ty.rs: pass -> [missing] (J0)
  • [ui] tests/ui/associated-consts/assoc-const-eq-const_evaluatable_unchecked.rs: pass -> [missing] (J0)
  • [ui] tests/ui/associated-consts/assoc-const-eq-esc-bound-var-in-ty.rs: pass -> [missing] (J0)
  • [ui] tests/ui/associated-consts/assoc-const-eq-supertraits.rs: pass -> [missing] (J0)
  • [ui] tests/ui/associated-consts/assoc-const-eq-ty-alias-noninteracting.rs: pass -> [missing] (J0)
  • [ui] tests/ui/associated-consts/assoc-const-ty-mismatch.rs: pass -> [missing] (J0)
  • [ui] tests/ui/associated-consts/assoc-const.rs: pass -> [missing] (J0)
  • [ui] tests/ui/associated-consts/equality-unused-issue-126729.rs: pass -> [missing] (J0)
  • [ui] tests/ui/associated-consts/issue-102335-const.rs: pass -> [missing] (J0)
  • [ui] tests/ui/associated-consts/issue-105330.rs: pass -> [missing] (J0)
  • [ui] tests/ui/associated-consts/projection-unspecified-but-bounded.rs: pass -> [missing] (J0)
  • [ui] tests/ui/associated-type-bounds/const-projection-err.rs: pass -> [missing] (J0)
  • [ui] tests/ui/associated-type-bounds/issue-99828.rs: pass -> [missing] (J0)
  • [ui] tests/ui/const-generics/assoc_const_eq_diagnostic.rs: pass -> [missing] (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/ambiguity.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/assoc-const-ty-mismatch.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/assoc-const.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/bound-var-in-ty-not-wf.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/bound-var-in-ty.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/coexisting-with-type-binding.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/coherence.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/const-bound-to-assoc-ty-99828.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/const-projection-err.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/const_evaluatable_unchecked.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/equality-unused-issue-126729.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/equality_bound_with_infer.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/esc-bound-var-in-ty.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/issue-102335-const.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/issue-105330.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/issue-93835.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/mismatched-types-with-generic-in-ace-no-feature-gate.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/mismatched-types-with-generic-in-ace.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/missing.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/param-in-ty.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/projection-unspecified-but-bounded.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/supertraits.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/unbraced-enum-variant.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/unconstrained_impl_param.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated-const-bindings/using-fnptr-as-type_const.rs: [missing] -> pass (J0)
  • [ui] tests/ui/const-generics/associated_const_equality/coherence.rs: pass -> [missing] (J0)
  • [ui] tests/ui/const-generics/associated_const_equality/equality_bound_with_infer.rs: pass -> [missing] (J0)
  • [ui] tests/ui/const-generics/associated_const_equality/mismatched-types-with-generic-in-ace-no-feature-gate.rs: pass -> [missing] (J0)
  • [ui] tests/ui/const-generics/associated_const_equality/mismatched-types-with-generic-in-ace.rs: pass -> [missing] (J0)
  • [ui] tests/ui/const-generics/associated_const_equality/unconstrained_impl_param.rs: pass -> [missing] (J0)
  • [ui] tests/ui/const-generics/mgca/using-fnptr-as-type_const.rs: pass -> [missing] (J0)
  • [ui] tests/ui/generic-const-items/associated-const-equality.rs: pass -> [missing] (J0)

(and 4 additional test diffs)

Additionally, 2 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 2f1bd3f3781c90a8447e37d65a898442b8618895 --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

  1. dist-x86_64-apple: 6493.7s -> 10085.9s (+55.3%)
  2. i686-gnu-nopt-2: 8674.8s -> 7584.9s (-12.6%)
  3. test-various: 6874.4s -> 7653.9s (+11.3%)
  4. x86_64-gnu-llvm-21-2: 5282.7s -> 5881.7s (+11.3%)
  5. dist-i586-gnu-i586-i686-musl: 5134.3s -> 5604.9s (+9.2%)
  6. pr-check-2: 2440.6s -> 2651.3s (+8.6%)
  7. dist-ohos-x86_64: 4200.3s -> 4518.5s (+7.6%)
  8. x86_64-msvc-ext1: 8243.7s -> 7677.4s (-6.9%)
  9. dist-riscv64-linux: 4629.2s -> 4930.2s (+6.5%)
  10. aarch64-apple: 11831.7s -> 12590.2s (+6.4%)
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.

This was referenced Jan 13, 2026
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rust-timer commented Jan 13, 2026

Finished benchmarking commit (2f1bd3f): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

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

Max RSS (memory usage)

Results (primary 4.1%)

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)		 - - 0
Improvements ✅
(primary)		 - - 0
Improvements ✅
(secondary)		 - - 0
All ❌✅ (primary) 4.1% [4.1%, 4.1%] 1

Cycles

Results (primary 3.2%, 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)		 3.2% [3.2%, 3.2%] 1
Regressions ❌
(secondary)		 2.5% [2.5%, 2.5%] 1
Improvements ✅
(primary)		 - - 0
Improvements ✅
(secondary)		 - - 0
All ❌✅ (primary) 3.2% [3.2%, 3.2%] 1

Binary size

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

Bootstrap: 474.371s -> 475.39s (0.21%)
Artifact size: 391.41 MiB -> 391.43 MiB (0.00%)

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