Sync from rust 2025/07/04 #2868

Job	Run time
build_system	22s
spell_check	9s
duplicates	5s
build (gcc-15.deb, --extended-regex-tests)	11m 21s
build (gcc-15.deb, --test-libcore)	16m 1s
build (gcc-15.deb, --std-tests)	5m 52s
build (gcc-15.deb, --test-successful-rustc --nb-parts 2 --current-part 0)	12m 46s
build (gcc-15.deb, --test-successful-rustc --nb-parts 2 --current-part 1)	14m 12s
build (gcc-15.deb, --extended-rand-tests)	8m 28s
build (gcc-15.deb, --extended-regex-example-tests)	7m 11s
build (gcc-15-without-int128.deb, --extended-regex-example-tests)	6m 52s
build (gcc-15-without-int128.deb, --std-tests)	5m 52s
build (gcc-15.deb, --projects)	11m 37s
build (gcc-15-without-int128.deb, --extended-rand-tests)	9m 16s
build (gcc-15-without-int128.deb, --extended-regex-tests)	12m 19s
build (gcc-15-without-int128.deb, --projects)	11m 9s
build (gcc-15-without-int128.deb, --test-libcore)	16m 19s
build (gcc-15-without-int128.deb, --test-successful-rustc --nb-parts 2 --current-part 1)	12m 42s
build (gcc-15-without-int128.deb, --test-successful-rustc --nb-parts 2 --current-part 0)	13m 30s
success	2s
	2h 56m 5s

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