2021-05-10 08:56:40,360 [INFO] {1342195} koji.build.buildroot:541 Running mock as kojibuilder
ERROR: Option --new-chroot has been deprecated. Use --isolation=nspawn instead.
INFO: mock.py version 2.8 starting (python version = 3.6.8, NVR = mock-2.8-1.el8)...
Start(bootstrap): init plugins
INFO: selinux enabled
Finish(bootstrap): init plugins
Start: init plugins
INFO: selinux enabled
Finish: init plugins
INFO: Signal handler active
Start: run
Start: clean chroot
Finish: clean chroot
Start(bootstrap): chroot init
INFO: calling preinit hooks
INFO: enabled HW Info plugin
Mock Version: 2.8
INFO: Mock Version: 2.8
Start(bootstrap): dnf install
ERROR: expected str, bytes or os.PathLike object, not int
Traceback (most recent call last):
  File "/dev/fd/4", line 1059, in <module>
    exitStatus = main()
  File "/usr/lib/python3.6/site-packages/mockbuild/trace_decorator.py", line 93, in trace
    result = func(*args, **kw)
  File "/dev/fd/4", line 825, in main
    result = run_command(options, args, config_opts, commands, buildroot, state)
  File "/usr/lib/python3.6/site-packages/mockbuild/trace_decorator.py", line 93, in trace
    result = func(*args, **kw)
  File "/dev/fd/4", line 853, in run_command
    commands.init()
  File "/usr/lib/python3.6/site-packages/mockbuild/trace_decorator.py", line 93, in trace
    result = func(*args, **kw)
  File "/usr/lib/python3.6/site-packages/mockbuild/backend.py", line 166, in init
    self.bootstrap_buildroot.initialize(**kwargs)
  File "/usr/lib/python3.6/site-packages/mockbuild/trace_decorator.py", line 93, in trace
    result = func(*args, **kw)
  File "/usr/lib/python3.6/site-packages/mockbuild/buildroot.py", line 134, in initialize
    self._init(prebuild=prebuild, do_log=do_log)
  File "/usr/lib/python3.6/site-packages/mockbuild/trace_decorator.py", line 93, in trace
    result = func(*args, **kw)
  File "/usr/lib/python3.6/site-packages/mockbuild/buildroot.py", line 206, in _init
    self._init_pkg_management()
  File "/usr/lib/python3.6/site-packages/mockbuild/trace_decorator.py", line 93, in trace
    result = func(*args, **kw)
  File "/usr/lib/python3.6/site-packages/mockbuild/buildroot.py", line 382, in _init_pkg_management
    self.pkg_manager.init_install_output += self.pkg_manager.execute(*cmd, returnOutput=1)
  File "/usr/lib/python3.6/site-packages/mockbuild/trace_decorator.py", line 93, in trace
    result = func(*args, **kw)
  File "/usr/lib/python3.6/site-packages/mockbuild/package_manager.py", line 224, in execute
    **kwargs)
  File "/usr/lib/python3.6/site-packages/mockbuild/plugins/selinux.py", line 106, in _selinuxDoYum
    return self._originalUtilDo(command, *args, **kargs)
  File "/usr/lib/python3.6/site-packages/mockbuild/util.py", line 500, in do
    return do_with_status(*args, **kargs)[0]
  File "/usr/lib/python3.6/site-packages/mockbuild/trace_decorator.py", line 93, in trace
    result = func(*args, **kw)
  File "/usr/lib/python3.6/site-packages/mockbuild/util.py", line 552, in do_with_status
    preexec_fn=preexec,
  File "/usr/lib64/python3.6/subprocess.py", line 729, in __init__
    restore_signals, start_new_session)
  File "/usr/lib64/python3.6/subprocess.py", line 1275, in _execute_child
    env_list.append(k + b'=' + os.fsencode(v))
  File "/usr/lib64/python3.6/os.py", line 800, in fsencode
    filename = fspath(filename)  # Does type-checking of `filename`.
TypeError: expected str, bytes or os.PathLike object, not int