https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59305
--- Comment #27 from Christophe Lyon <clyon at gcc dot gnu.org> --- I've noticed timeouts on aarch64 too, where the hook is implemented IIUC. Run-time varies a lot too: from 5 minutes to ~1h, with the same binary, same machine, where I am the only user.
