Sync from rust 2026/01/28 #1958

Job	Run time
build (--test-libcore)	39s
build (--mini-tests)	46s
build (--test-successful-rustc --nb-parts 2 --current-part 0)	42s
build (--std-tests)	40s
build (--test-successful-rustc --nb-parts 2 --current-part 1)	46s
success_gcc12	4s
	3m 37s

Provide feedback