Sync from rust 2026/03/13 (2) #3338

Job	Run time
spell_check	14s
build_system	29s
duplicates	4s
build (gcc-15.deb, --std-tests)	5m 58s
build (gcc-15.deb, --test-libcore)	13m 52s
build (gcc-15.deb, --extended-regex-tests)	13m 54s
build (gcc-15.deb, --extended-regex-example-tests)	6m 42s
build (gcc-15-without-int128.deb, --projects)	12m 39s
build (gcc-15-without-int128.deb, --std-tests)	6m 23s
build (gcc-15.deb, --projects)	13m 10s
build (gcc-15-without-int128.deb, --test-successful-rustc --nb-parts 2 --current-part 0)	13m 56s
build (gcc-15-without-int128.deb, --extended-regex-example-tests)	6m 30s
build (gcc-15-without-int128.deb, --test-libcore)	14m 40s
build (gcc-15-without-int128.deb, --extended-regex-tests)	12m 37s
build (gcc-15.deb, --test-successful-rustc --nb-parts 2 --current-part 0)	23m 23s
build (gcc-15-without-int128.deb, --test-successful-rustc --nb-parts 2 --current-part 1)	14m 37s
build (gcc-15-without-int128.deb, --extended-rand-tests)	8m 52s
build (gcc-15.deb, --test-successful-rustc --nb-parts 2 --current-part 1)	14m 38s
build (gcc-15.deb, --extended-rand-tests)	8m 52s
success	2s
	3h 11m 32s

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