Version-Release number of selected component:
yum-3.4.3-106.fc20

Additional info:
reporter:       libreport-2.1.9
cmdline:        /usr/bin/python -t /usr/share/yum-cli/completion-helper.py -d 0 -C list available perf
executable:     /usr/share/yum-cli/completion-helper.py
kernel:         3.10.4-300.fc19.x86_64
runlevel:       N 5
type:           Python

Truncated backtrace:
misc.py:952:unlink_f:OSError: [Errno 13] Permission denied: '/var/cache/yum/x86_64/20/fedora/gen/primary_db.sqlite'

Traceback (most recent call last):
  File "/usr/share/yum-cli/completion-helper.py", line 95, in <module>
    main(sys.argv[1:])
  File "/usr/share/yum-cli/completion-helper.py", line 88, in main
    base.doCommands()
  File "/usr/share/yum-cli/cli.py", line 532, in doCommands
    return self.yum_cli_commands[self.basecmd].doCommand(self, self.basecmd, self.extcmds)
  File "/usr/share/yum-cli/completion-helper.py", line 52, in doCommand
    patterns=[get_pattern(extcmds)])
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 2910, in doPackageLists
    avail = self.pkgSack.returnNewestByNameArch(patterns=patterns,
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 1050, in <lambda>
    pkgSack = property(fget=lambda self: self._getSacks(),
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 770, in _getSacks
    self.repos.populateSack(which=repos)
  File "/usr/lib/python2.7/site-packages/yum/repos.py", line 383, in populateSack
    sack.populate(repo, mdtype, callback, cacheonly)
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 237, in populate
    misc.unlink_f(repo.cachedir +'/gen/%s.sqlite' % mydbtype)
  File "/usr/lib/python2.7/site-packages/yum/misc.py", line 952, in unlink_f
    os.unlink(filename)
OSError: [Errno 13] Permission denied: '/var/cache/yum/x86_64/20/fedora/gen/primary_db.sqlite'

Local variables in innermost frame:
e: OSError(13, 'Permission denied')
filename: '/var/cache/yum/x86_64/20/fedora/gen/primary_db.sqlite'