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Investigate PR162051 regression - #162163

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Investigate PR162051 regression#162163
nnethercote wants to merge 1 commit into
rust-lang:mainfrom
nnethercote:hmm-162051

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@rustbot rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Sep 2, 2026
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@bors try @rust-timer queue

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@rustbot rustbot added the S-waiting-on-perf Status: Waiting on a perf run to be completed. label Sep 2, 2026
rust-bors Bot pushed a commit that referenced this pull request Sep 2, 2026
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☀️ Try build successful (CI)
Build commit: 818a40d (818a40d06a8edc0a5f646a875c9351ef1a14ea83)
Base parent: 5db7f4b (5db7f4be8a36c1b8ae19299469e2be2b0f052c21)

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Finished benchmarking commit (818a40d): comparison URL.

Overall result: no relevant changes - no action needed

Benchmarking means the PR may be perf-sensitive. Consider adding rollup=never if this change is not fit for rolling up.

@rustbot label: -S-waiting-on-perf -perf-regression

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 3.6%)

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)
3.6% [3.6%, 3.6%] 1
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
- - 0
All ❌✅ (primary) - - 0

Binary size

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

Bootstrap: 475.082s -> 475.324s (0.05%)
Artifact size: 400.59 MiB -> 400.43 MiB (-0.04%)

@rustbot rustbot removed the S-waiting-on-perf Status: Waiting on a perf run to be completed. label Sep 2, 2026
@nnethercote nnethercote closed this Sep 2, 2026
@rustbot rustbot removed the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Sep 2, 2026
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