Sync from rust 2026/04/05 #2095

Job	Run time
build (--test-successful-rustc --nb-parts 2 --current-part 1)	49s
build (--test-successful-rustc --nb-parts 2 --current-part 0)	51s
build (--std-tests)	57s
build (--mini-tests)	53s
build (--test-libcore)	50s
success_gcc12	2s
	4m 22s

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