Version-Release number of selected component:
dnf-1.1.5-1.fc23

Additional info:
reporter:       libreport-2.6.3
cmdline:        /usr/bin/python3 /usr/bin/dnf -q check-update
dnf-makecache.log: -- No entries --
executable:     /usr/bin/dnf
kernel:         4.1.13-8.pvops.qubes.x86_64
runlevel:       N 3
type:           Python3
uid:            0

Truncated backtrace:
base.py:134:_add_repo_to_sack:AssertionError: Can not load repo.

Traceback (most recent call last):
  File "/usr/bin/dnf", line 57, in <module>
    main.user_main(sys.argv[1:], exit_code=True)
  File "/usr/lib/python3.4/site-packages/dnf/cli/main.py", line 174, in user_main
    errcode = main(args)
  File "/usr/lib/python3.4/site-packages/dnf/cli/main.py", line 60, in main
    return _main(base, args)
  File "/usr/lib/python3.4/site-packages/dnf/cli/main.py", line 112, in _main
    cli.run()
  File "/usr/lib/python3.4/site-packages/dnf/cli/cli.py", line 1094, in run
    self._process_demands()
  File "/usr/lib/python3.4/site-packages/dnf/cli/cli.py", line 810, in _process_demands
    load_available_repos=lar)
  File "/usr/lib/python3.4/site-packages/dnf/base.py", line 256, in fill_sack
    self._add_repo_to_sack(r.id)
  File "/usr/lib/python3.4/site-packages/dnf/base.py", line 134, in _add_repo_to_sack
    load_updateinfo=True)
AssertionError: Can not load repo.

Local variables in innermost frame:
self: <dnf.cli.cli.BaseCli object at 0x7ff0aba7a6a0>
hrepo: <_hawkey.Repo object at 0x7ff0abbaed98>
repo: <Repo fedora>
name: 'fedora'