Sometimes skip over tokens in parse_token_tree.

[nnethercote]

r? @petrochenkov

[nnethercote]

@bors try @rust-timer queue

[rust-bors]

☀️ Try build successful (CI)
Build commit: 654bdaa (654bdaae809cf60c7c5682520b31acf310562481, parent: 1c9952f4dd6e0947ee91f07130c03813a088a894)

[rust-timer]

Finished benchmarking commit (654bdaa): comparison URL.

Overall result: ✅ improvements - no action needed

Benchmarking this pull request means it may be perf-sensitive – we'll automatically label it not fit for rolling up. You can override this, but we strongly advise not to, due to possible changes in compiler perf.

@bors rollup=never
@rustbot label: -S-waiting-on-perf -perf-regression

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)	-0.5%	[-0.9%, -0.3%]	18
Improvements ✅ (secondary)	-1.4%	[-2.0%, -0.1%]	9
All ❌✅ (primary)	-0.5%	[-0.9%, -0.3%]	18

Max RSS (memory usage)

Results (secondary -3.3%)

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)	-3.3%	[-3.6%, -2.9%]	2
All ❌✅ (primary)	-	-	0

Cycles

Results (secondary 5.6%)

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)	5.6%	[5.6%, 5.6%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Binary size

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

Bootstrap: 465.78s -> 464.927s (-0.18%)
Artifact size: 377.44 MiB -> 377.41 MiB (-0.01%)

[nnethercote]

This was inspired by the uom crate:

[petrochenkov]

@bors r+

[bors]

📌 Commit 145b847 has been approved by petrochenkov

It is now in the queue for this repository.

[bors]

⌛ Testing commit 145b847 with merge bec7474...

[bors]

☀️ Test successful - checks-actions
Approved by: petrochenkov
Pushing bec7474 to master...

[github-actions]

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 22a86f8 (parent) -> bec7474 (this PR)

Test differences

Show 2 test diffs

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

Test dashboard

Run

cargo run --manifest-path src/ci/citool/Cargo.toml -- \
    test-dashboard bec747418c9955de4c3fd0aac4acb99206f00aa2 --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: 6323.3s -> 8506.4s (34.5%)
2. dist-aarch64-linux: 8549.0s -> 6117.6s (-28.4%)
3. pr-check-1: 1846.0s -> 1588.0s (-14.0%)
4. dist-apple-various: 4341.1s -> 4910.7s (13.1%)
5. x86_64-gnu-aux: 7289.2s -> 6498.2s (-10.9%)
6. x86_64-gnu-tools: 3490.1s -> 3839.8s (10.0%)
7. aarch64-gnu: 6990.5s -> 7442.9s (6.5%)
8. dist-android: 2480.4s -> 2622.6s (5.7%)
9. x86_64-gnu-stable: 7279.3s -> 7671.9s (5.4%)
10. dist-powerpc-linux: 4947.1s -> 5175.1s (4.6%)

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]

Finished benchmarking commit (bec7474): comparison URL.

Overall result: ✅ improvements - no action needed

@rustbot label: -perf-regression

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)	-1.0%	[-2.1%, -0.3%]	16
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

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

Cycles

Results (secondary 5.6%)

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)	5.6%	[5.6%, 5.6%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Binary size

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

Bootstrap: 470.428s -> 471.629s (0.26%)
Artifact size: 378.15 MiB -> 378.28 MiB (0.03%)