https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103944
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- The process when it hangs is stuck on pthread_mutex_lock called from _D4core4sync5mutex5Mutex__T12lock_nothrowTCQBpQBnQBlQBiZQBdMFNbNiNeZv in libgphobos.so.3. #0 0xf7ee6579 in __kernel_vsyscall () #1 0xf73af173 in __lll_lock_wait () from /var/lib/mock/fedora-rawhide-i686/root/lib/libc.so.6 #2 0xf73b5f41 in pthread_mutex_lock@@GLIBC_2.0 () from /var/lib/mock/fedora-rawhide-i686/root/lib/libc.so.6 #3 0xf77b41d0 in ?? () #4 0xf7e0cff4 in ?? () where 0xf77b41d0 is inside of _D4core4sync5mutex5Mutex__T12lock_nothrowTCQBpQBnQBlQBiZQBdMFNbNiNeZv
