Description of problem:
just did a dnf search.

Version-Release number of selected component:
dnf-0.2.14-2.git4831982.fc18

Additional info:
libreport version: 2.0.18
abrt_version:   2.0.18
cmdline:        /usr/bin/python /usr/bin/dnf search gummiboot
kernel:         3.6.6-3.fc18.x86_64

backtrace:
:match_counter.py:61:_max_needles:ValueError: max() arg is an empty sequence
:
:Traceback (most recent call last):
:  File "/usr/bin/dnf", line 35, in <module>
:    yummain.user_main(sys.argv[1:], exit_code=True)
:  File "/usr/lib/python2.7/site-packages/dnf/cli/yummain.py", line 316, in user_main
:    errcode = main(args)
:  File "/usr/lib/python2.7/site-packages/dnf/cli/yummain.py", line 140, in main
:    result, resultmsgs = base.doCommands()
:  File "/usr/lib/python2.7/site-packages/dnf/cli/cli.py", line 483, in doCommands
:    return self.yum_cli_commands[self.basecmd].doCommand(self, self.basecmd, self.extcmds)
:  File "/usr/lib/python2.7/site-packages/dnf/cli/yumcommands.py", line 1254, in doCommand
:    return base.search(extcmds)
:  File "/usr/lib/python2.7/site-packages/dnf/cli/cli.py", line 1217, in search
:    for pkg in counter.sorted(reverse=True, limit_to=limit):
:  File "/usr/lib/python2.7/site-packages/dnf/match_counter.py", line 81, in sorted
:    return sorted(keys, key=self._key_func(), reverse=reverse)
:  File "/usr/lib/python2.7/site-packages/dnf/match_counter.py", line 54, in _key_func
:    max_length = self._max_needles()
:  File "/usr/lib/python2.7/site-packages/dnf/match_counter.py", line 61, in _max_needles
:    return max(map(lambda pkg: len(self.matched_needles(pkg)), self))
:ValueError: max() arg is an empty sequence
:
:Local variables in innermost frame:
:self: {}