Bump bootstrap compiler to 1.83.0-beta.1

[cuviper]

https://forge.rust-lang.org/release/process.html#master-bootstrap-update-tuesday

[rustbot]

r? @Kobzol

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[rustbot]

The Miri subtree was changed

cc @rust-lang/miri

[Urgau]

Would it be possible to include Cargo.toml files into the search for #[cfg(bootstrap)] as we have some check-cfg lint config that would be good to cleanup, e.g.

rust/library/core/Cargo.toml

Lines 46 to 47 in 9618da7

	# #[cfg(bootstrap)] rtems
	'cfg(target_os, values("rtems"))',

EDIT: Opened rust-lang/rust-forge#772 include them in release process

[Mark-Simulacrum]

@bors r+ rollup=iffy p=1

Seems like we can do that in follow-up PRs.

[bors]

📌 Commit cd60224 has been approved by Mark-Simulacrum

It is now in the queue for this repository.

[bors]

⌛ Testing commit cd60224 with merge bed75e7...

[bors]

☀️ Test successful - checks-actions
Approved by: Mark-Simulacrum
Pushing bed75e7 to master...

[rust-timer]

Finished benchmarking commit (bed75e7): 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)

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

Cycles

Results (primary -3.3%, secondary -1.3%)

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)	2.2%	[2.2%, 2.2%]	1
Improvements ✅ (primary)	-3.3%	[-5.7%, -0.8%]	2
Improvements ✅ (secondary)	-2.5%	[-2.7%, -2.2%]	3
All ❌✅ (primary)	-3.3%	[-5.7%, -0.8%]	2

Binary size

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

Bootstrap: 780.757s -> 780.671s (-0.01%)
Artifact size: 333.64 MiB -> 333.70 MiB (0.02%)