Description of problem:
If I remember correctly, I tried to enable a COPR and this error appeared. Nevertheless, the COPR was enabled correctly.

Version-Release number of selected component:
dnf-0.6.0-1.fc21

Additional info:
reporter:       libreport-2.2.3
cmdline:        /usr/bin/python -OO /usr/bin/dnf copr enable comzeradd/geary-git
dso_list:       dnf-plugins-core-0.1.2-1.fc21.noarch
executable:     /usr/bin/dnf
kernel:         3.16.1-300.fc21.x86_64
runlevel:       N 5
type:           Python
uid:            0

Truncated backtrace:
copr.py:105:run:AttributeError: 'Cli' object has no attribute 'logger'

Traceback (most recent call last):
  File "/usr/bin/dnf", line 36, in <module>
    main.user_main(sys.argv[1:], exit_code=True)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 182, in user_main
    errcode = main(args)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 84, in main
    return _main(base, args)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 134, in _main
    cli.run()
  File "/usr/lib/python2.7/site-packages/dnf/cli/cli.py", line 1072, in run
    return self.command.run(self.base.extcmds)
  File "/usr/lib/python2.7/site-packages/dnf-plugins/copr.py", line 105, in run
    self.cli.logger.info(_("Repository successfully enabled."))
AttributeError: 'Cli' object has no attribute 'logger'

Local variables in innermost frame:
project_name: u'comzeradd/geary-git'
repo_filename: '/etc/yum.repos.d/_copr_comzeradd-geary-git.repo'
self: <dnf.plugin.dynamic.copr.CoprCommand object at 0x7f8911a61290>
subcommand: u'enable'
extcmds: [u'enable', u'comzeradd/geary-git']
chroot: 'fedora-21-x86_64'