Improve rustdoc json tests

[GuillaumeGomez]

Fixes #100588.

r? @aDotInTheVoid

[aDotInTheVoid]

FYI, I don't have r+ privileges, so can't approve this PR.

r? @CraftSpider

[GuillaumeGomez]

I know, but if it looks good to you, I can approve for you, so it's fine. ;)

[GuillaumeGomez]

Applied your suggestions (and rebased on master to fix CI).

[GuillaumeGomez]

Applied suggestions bis repetita. :)

[aDotInTheVoid]

Looks all good to me.

[bors]

☔ The latest upstream changes (presumably #100677) made this pull request unmergeable. Please resolve the merge conflicts.

[GuillaumeGomez]

@bors: r=aDotInTheVoid rollup=never

[bors]

📌 Commit d3d9e22 has been approved by aDotInTheVoid

It is now in the queue for this repository.

[bors]

⌛ Testing commit d3d9e22 with merge 7e3e8a8...

[bors]

☀️ Test successful - checks-actions
Approved by: aDotInTheVoid
Pushing 7e3e8a8 to master...

[rust-timer]

Finished benchmarking commit (7e3e8a8): 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

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean1	range	count2
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-1.9%	[-1.9%, -1.9%]	2
All ❌✅ (primary)	-	-	0

Cycles

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean1	range	count2
Regressions ❌ (primary)	2.4%	[2.4%, 2.4%]	1
Regressions ❌ (secondary)	2.4%	[2.4%, 2.4%]	1
Improvements ✅ (primary)	-2.0%	[-2.0%, -2.0%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.2%	[-2.0%, 2.4%]	2

Footnotes

1. the arithmetic mean of the percent change ↩ ↩²

2. number of relevant changes ↩ ↩²