Fix for m68k #2899

Job	Run time
build_system	27s
duplicates	5s
spell_check	11s
build (gcc-15.deb, --extended-rand-tests)	8m 14s
build (gcc-15.deb, --extended-regex-example-tests)	6m 31s
build (gcc-15.deb, --std-tests)	5m 40s
build (gcc-15.deb, --extended-regex-tests)	11m 7s
build (gcc-15.deb, --test-successful-rustc --nb-parts 2 --current-part 1)	13m 30s
build (gcc-15-without-int128.deb, --test-successful-rustc --nb-parts 2 --current-part 1)	13m 1s
build (gcc-15-without-int128.deb, --test-libcore)	17m 10s
build (gcc-15.deb, --test-libcore)	15m 29s
build (gcc-15-without-int128.deb, --std-tests)	5m 52s
build (gcc-15-without-int128.deb, --extended-regex-example-tests)	7m 50s
build (gcc-15-without-int128.deb, --projects)	11m 7s
build (gcc-15-without-int128.deb, --test-successful-rustc --nb-parts 2 --current-part 0)	13m 12s
build (gcc-15.deb, --test-successful-rustc --nb-parts 2 --current-part 0)	12m 44s
build (gcc-15.deb, --projects)	11m 47s
build (gcc-15-without-int128.deb, --extended-rand-tests)	9m 43s
build (gcc-15-without-int128.deb, --extended-regex-tests)	11m 23s
success	2s
	2h 55m 5s

Provide feedback