Version-Release number of selected component:
dnf-1.1.0-2.fc23

Additional info:
reporter:       libreport-2.6.2
cmdline:        /usr/bin/python3 -OO /bin/dnf --releasever=23 --allowerasing upgrade selinux*
executable:     /bin/dnf
kernel:         4.2.0-0.rc6.git1.1.fc24.x86_64
runlevel:       N 5
type:           Python3
uid:            0

Truncated backtrace:
ascii.py:26:decode:UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position 32: ordinal not in range(128)

Traceback (most recent call last):
  File "/bin/dnf", line 35, in <module>
    main.user_main(sys.argv[1:], exit_code=True)
  File "/usr/lib/python3.4/site-packages/dnf/cli/main.py", line 193, in user_main
    errcode = main(args)
  File "/usr/lib/python3.4/site-packages/dnf/cli/main.py", line 84, in main
    return _main(base, args)
  File "/usr/lib/python3.4/site-packages/dnf/cli/main.py", line 146, in _main
    ret = resolving(cli, base)
  File "/usr/lib/python3.4/site-packages/dnf/cli/main.py", line 178, in resolving
    base.plugins.run_transaction()
  File "/usr/lib/python3.4/site-packages/dnf/plugin.py", line 82, in fn
    dnf.util.mapall(operator.methodcaller(method), self.plugins)
  File "/usr/lib/python3.4/site-packages/dnf/util.py", line 157, in mapall
    return list(map(fn, *seq))
  File "/usr/lib/python3.4/site-packages/dnf-plugins/rpm_conf.py", line 47, in transaction
    rconf.run()
  File "/usr/lib/python3.4/site-packages/rpmconf/rpmconf.py", line 90, in run
    self._handle_package(pkg_hdr)
  File "/usr/lib/python3.4/site-packages/rpmconf/rpmconf.py", line 264, in _handle_package
    tmp.format(conf_file, "rpmnew"))
  File "/usr/lib/python3.4/site-packages/rpmconf/rpmconf.py", line 290, in _handle_rpmnew
    self._ls_conf_file(conf_file, other_file)
  File "/usr/lib/python3.4/site-packages/rpmconf/rpmconf.py", line 212, in _ls_conf_file
    universal_newlines=True))
  File "/usr/lib64/python3.4/subprocess.py", line 609, in check_output
    output, unused_err = process.communicate(inputdata, timeout=timeout)
  File "/usr/lib64/python3.4/subprocess.py", line 946, in communicate
    stdout = _eintr_retry_call(self.stdout.read)
  File "/usr/lib64/python3.4/subprocess.py", line 491, in _eintr_retry_call
    return func(*args)
  File "/usr/lib64/python3.4/encodings/ascii.py", line 26, in decode
    return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position 32: ordinal not in range(128)

Local variables in innermost frame:
self: <encodings.ascii.IncrementalDecoder object at 0x7fcb99247278>
final: True
input: b'-rw-r--r--. 1 root root 1769 13.\xc2\xa0srp 08.15 /etc/nsswitch.conf\n-rw-r--r--. 1 root root 1702 14.\xc2\xa0srp 10.12 /etc/nsswitch.conf.rpmnew\n'