ci: use ubuntu 22 for free arm runners

[marcoieni]

ubuntu 24 on arm has issues.
So imo we should run ubuntu 24 only on x86 runners.
Discussed in zulip.

try-job: aarch64-gnu
try-job: aarch64-gnu-debug

[rustbot]

r? @Mark-Simulacrum

rustbot has assigned @Mark-Simulacrum.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

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[marcoieni]

@bors try

[bors]

⌛ Trying commit 6021598 with merge 883babc...

[bors]

☀️ Try build successful - checks-actions
Build commit: 883babc (883babc9f72b69a767f155feb5d1f5882a410415)

[marcoieni]

@rustbot ready

[jieyouxu]

@bors p=50 (runner stability hotfix)

[Kobzol]

@bors r+

[bors]

📌 Commit 6021598 has been approved by Kobzol

It is now in the queue for this repository.

[bors]

⌛ Testing commit 6021598 with merge 5ff18d0...

[bors]

☀️ Test successful - checks-actions
Approved by: Kobzol
Pushing 5ff18d0 to master...

[jieyouxu]

Pray 🙏

[rust-timer]

Finished benchmarking commit (5ff18d0): 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 0.3%, secondary -2.9%)

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)	1.9%	[1.9%, 1.9%]	1
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-1.2%	[-1.2%, -1.2%]	1
Improvements ✅ (secondary)	-2.9%	[-2.9%, -2.9%]	1
All ❌✅ (primary)	0.3%	[-1.2%, 1.9%]	2

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: 778.095s -> 777.403s (-0.09%)
Artifact size: 328.98 MiB -> 329.02 MiB (0.01%)