Merge pull request #878 from rust-lang/sync_from_rust_2026_04_29 #2099

Job	Run time
build (--std-tests)	58s
build (--mini-tests)	59s
build (--test-successful-rustc --nb-parts 2 --current-part 0)	1m 0s
build (--test-successful-rustc --nb-parts 2 --current-part 1)	56s
build (--test-libcore)	1m 1s
success_gcc12	3s
	4m 57s

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