DEBUG util.py:444:    File "/usr/lib/python3.11/site-packages/imgcreate/creator.py", line 613, in cleanup
DEBUG util.py:444:      self.unmount()
DEBUG util.py:444:    File "/usr/lib/python3.11/site-packages/imgcreate/creator.py", line 585, in unmount
DEBUG util.py:444:      self._undo_bindmounts()
DEBUG util.py:444:    File "/usr/lib/python3.11/site-packages/imgcreate/creator.py", line 355, in _undo_bindmounts
DEBUG util.py:444:      b.unmount()
DEBUG util.py:444:    File "/usr/lib/python3.11/site-packages/imgcreate/fs.py", line 1065, in unmount
DEBUG util.py:444:      raise MountError(umount_fail_fmt % self.dest)
DEBUG util.py:444:  imgcreate.errors.MountError: Unable to unmount filesystem at /var/tmp/imgcreate-tnsb5obx/install_root/var/cache/dnf. The process using the imgcreate module, or one of the libraries used by that process, leaked a reference to the filesystem. Please report a bug at <https://github.com/livecd-tools/livecd-tools/issues>.
DEBUG util.py:444:  Exception ignored in: <function ImageCreator.__del__ at 0x3f94490d60>
DEBUG util.py:444:  Traceback (most recent call last):
DEBUG util.py:444:    File "/usr/lib/python3.11/site-packages/imgcreate/creator.py", line 114, in __del__
DEBUG util.py:444:    File "/usr/lib/python3.11/site-packages/imgcreate/creator.py", line 613, in cleanup
DEBUG util.py:444:    File "/usr/lib/python3.11/site-packages/imgcreate/creator.py", line 585, in unmount
DEBUG util.py:444:    File "/usr/lib/python3.11/site-packages/imgcreate/creator.py", line 355, in _undo_bindmounts
DEBUG util.py:444:    File "/usr/lib/python3.11/site-packages/imgcreate/fs.py", line 1062, in unmount
DEBUG util.py:444:    File "/usr/lib/python3.11/site-packages/imgcreate/util.py", line 31, in call
DEBUG util.py:444:    File "/usr/lib64/python3.11/subprocess.py", line 1022, in __init__
DEBUG util.py:444:    File "/usr/lib64/python3.11/subprocess.py", line 1829, in _execute_child
DEBUG util.py:444:    File "<frozen os>", line 628, in get_exec_path
DEBUG util.py:444:  ImportError: sys.meta_path is None, Python is likely shutting down
DEBUG util.py:598:  Child return code was: 1
DEBUG util.py:169:  kill orphans
DEBUG util.py:624:  child environment: None
DEBUG util.py:542:  Executing command: ['/bin/umount', '-n', '/var/lib/mock/f37-build-680034-76746/root/dev'] with env {'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'LANG': 'C.UTF-8'} and shell False
DEBUG util.py:598:  Child return code was: 0
DEBUG util.py:624:  child environment: None
DEBUG util.py:542:  Executing command: ['/bin/umount', '-n', '-l', '/var/lib/mock/f37-build-680034-76746/root/sys'] with env {'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'LANG': 'C.UTF-8'} and shell False
DEBUG util.py:598:  Child return code was: 0
DEBUG util.py:624:  child environment: None
DEBUG util.py:542:  Executing command: ['/bin/umount', '-n', '-l', '/var/lib/mock/f37-build-680034-76746/root/sys'] with env {'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'LANG': 'C.UTF-8'} and shell False
DEBUG util.py:598:  Child return code was: 0
DEBUG util.py:624:  child environment: None
DEBUG util.py:542:  Executing command: ['/bin/umount', '-n', '-l', '/var/lib/mock/f37-build-680034-76746/root/proc'] with env {'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'LANG': 'C.UTF-8'} and shell False
DEBUG util.py:598:  Child return code was: 0
DEBUG util.py:624:  child environment: None
DEBUG util.py:542:  Executing command: ['/bin/umount', '-n', '-l', '/var/lib/mock/f37-build-680034-76746/root/proc'] with env {'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'LANG': 'C.UTF-8'} and shell False
DEBUG util.py:598:  Child return code was: 0