Temporarily disable Fuchsia test job to unblock queue

[jieyouxu]

See https://rust-lang.zulipchat.com/#narrow/channel/242791-t-infra/topic/fuchsia.20failure/with/506637259 for efforts to fix the test job.

This PR temporarily disables the Fuchsia test job to unblock the queue, so that neither the Fuchsia maintainers nor T-infra maintainers should feel pressured to fix the job ASAP.

Please feel free to re-enable once the test job is fixed.
FYI @erickt since you or other Fuchsia maintainers will need to revert this change to merge Fuchsia test job fixes in the future.

r? infra-ci

[jhpratt]

I'm "only" a libs reviewer and as such can't (more like shouldn't) give this formal approval, but this is about as straightforward as it gets for CI.

[Kobzol]

@bors r+ p=101

[bors]

📌 Commit 351e0f7 has been approved by Kobzol

It is now in the queue for this repository.

[bors]

🌲 The tree is currently closed for pull requests below priority 100. This pull request will be tested once the tree is reopened.

[bors]

⌛ Testing commit 351e0f7 with merge 1370611...

[bors]

☀️ Test successful - checks-actions
Approved by: Kobzol
Pushing 1370611 to master...

[github-actions]

This is an experimental post-merge analysis report. You can ignore it.

Post-merge report

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 75530e9 (parent) -> 1370611 (this PR)

Test differences

No test diffs found

[rust-timer]

Finished benchmarking commit (1370611): 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 3.0%)

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.

	mean	range	count
Regressions ❌ (primary)	3.0%	[3.0%, 3.0%]	1
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	3.0%	[3.0%, 3.0%]	1

Cycles

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

Binary size

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

Bootstrap: 776.359s -> 775.384s (-0.13%)
Artifact size: 365.12 MiB -> 365.09 MiB (-0.01%)