Remove apple-alt dist build.

[ehuss]

This removes the dist-x86_64-apple-alt build to reduce CI usage because I suspect nobody is using it. This builder is almost identical to the dist-x86_64-apple with the small difference that the latter adds rust.lto=thin, and I do not think that difference was intentional. The reason they are identical is because llvm assertions were disabled in #44610, but I did not see any discussion about the consequence that this made the alt build identical to the normal build. Perhaps because #44610 was intended to be temporary?

[rustbot]

r? @Mark-Simulacrum

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[ehuss]

Just to compare the configure settings, the alt build differs by:

-build.sanitizers     := True
-rust.codegen-backends := ['llvm']
-rust.lld             := True
-rust.llvm-tools      := True
-rust.lto             := thin

none of which seem particularly important.

[Mark-Simulacrum]

This makes sense to me, good find. I think given current goals around optimizing capacity, I'm inclined to remove as well, we might restore with re-enabled assertions later (with faster macos builders or something else).

@bors r+

[bors]

📌 Commit 889b55b has been approved by Mark-Simulacrum

It is now in the queue for this repository.

[bors]

⌛ Testing commit 889b55b with merge c60ff10...

[bors]

☀️ Test successful - checks-actions
Approved by: Mark-Simulacrum
Pushing c60ff10 to master...

[rust-timer]

Finished benchmarking commit (c60ff10): comparison URL.

Overall result: ❌ regressions - no action needed

@rustbot label: -perf-regression

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	0.3%	[0.3%, 0.3%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

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.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	4.2%	[4.2%, 4.2%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

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: 635.074s -> 636.639s (0.25%)
Artifact size: 346.88 MiB -> 346.94 MiB (0.02%)