Fix for m68k #2375

Job	Run time
build (gcc-13.deb, --mini-tests)	5m 59s
build (gcc-13.deb, --std-tests)	5m 56s
build (gcc-13.deb, --test-libcore)	14m 18s
build (gcc-13.deb, --extended-rand-tests)	8m 43s
build (gcc-13.deb, --extended-regex-example-tests)	6m 23s
build (gcc-13.deb, --extended-regex-tests)	12m 3s
build (gcc-13.deb, --test-successful-rustc --nb-parts 2 --current-part 0)	11m 26s
build (gcc-13.deb, --test-successful-rustc --nb-parts 2 --current-part 1)	10m 57s
build (gcc-13.deb, --projects)	11m 44s
build (gcc-13-without-int128.deb, --mini-tests)	6m 2s
build (gcc-13-without-int128.deb, --std-tests)	6m 14s
build (gcc-13-without-int128.deb, --test-libcore)	14m 23s
build (gcc-13-without-int128.deb, --extended-rand-tests)	8m 45s
build (gcc-13-without-int128.deb, --extended-regex-example-tests)	6m 28s
build (gcc-13-without-int128.deb, --extended-regex-tests)	11m 56s
build (gcc-13-without-int128.deb, --test-successful-rustc --nb-parts 2 --current-part 0)	11m 31s
build (gcc-13-without-int128.deb, --test-successful-rustc --nb-parts 2 --current-part 1)	11m 21s
build (gcc-13-without-int128.deb, --projects)	11m 44s
build_system	25s
duplicates	3s
	2h 56m 21s

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