Description of problem:
Made a typo while testing for bodhi karma, and lack of error handling in createrepo caused the Python exception that triggers ABRT:

$ createrepo -i doesnotexist repodir
Traceback (most recent call last):
  File "/usr/share/createrepo/genpkgmetadata.py", line 307, in <module>
    main(sys.argv[1:])
  File "/usr/share/createrepo/genpkgmetadata.py", line 253, in main
    conf = parse_args(args, conf)
  File "/usr/share/createrepo/genpkgmetadata.py", line 202, in parse_args
    pfo = open(conf.pkglist, 'r')
IOError: [Errno 2] No such file or directory: 'doesnotexist'

Version-Release number of selected component:
createrepo-0.10.1-0.fc20

Additional info:
reporter:       libreport-2.1.10
cmdline:        /usr/bin/python -t /usr/share/createrepo/genpkgmetadata.py -i pkglist repo
executable:     /usr/share/createrepo/genpkgmetadata.py
kernel:         3.12.5-301.fc20.x86_64
runlevel:       N 5
type:           Python
uid:            1000

Truncated backtrace:
genpkgmetadata.py:202:parse_args:IOError: [Errno 2] No such file or directory: 'pkglist'

Traceback (most recent call last):
  File "/usr/share/createrepo/genpkgmetadata.py", line 307, in <module>
    main(sys.argv[1:])
  File "/usr/share/createrepo/genpkgmetadata.py", line 253, in main
    conf = parse_args(args, conf)
  File "/usr/share/createrepo/genpkgmetadata.py", line 202, in parse_args
    pfo = open(conf.pkglist, 'r')
IOError: [Errno 2] No such file or directory: 'pkglist'

Local variables in innermost frame:
opt: <Option at 0x16da170: --compress-type>
argsleft: ['repo']
args: ['-i', 'pkglist', 'repo']
_def: 'sha256'
directories: ['repo']
parser: <optparse.OptionParser instance at 0x16d6290>
def_workers: 0
lst: []
_avail: set(['sha256', 'sha1', 'sha384', 'sha512', 'md5'])
conf: <createrepo.MetaDataConfig object at 0x16afdd0>
directory: 'repo'
opts: <Values at 0x16da290: {'checkts': False, 'deltas': False, 'verbose': False, 'content_tags': [], 'oldpackage_paths': [], 'skip_symlinks': False, 'num_deltas': 1, 'max_delta_rpm_size': 100000000, 'nodatabase': False, 'compress_type': 'compat', 'skip_stat': False, 'outputdir': None, 'excludes': [], 'workers': 0, 'basedir': '/home/ms20b/repo/repodata', 'split': False, 'pretty': False, 'pkglist': 'pkglist', 'revision': None, 'profile': False, 'changelog_limit': None, 'retain_old_md': 0, 'sumtype': 'sha256', 'update': False, 'baseurl': None, 'cachedir': None, 'includepkg': [], 'update_md_path': None, 'xz': False, 'database': True, 'unique_md_filenames': True, 'quiet': False, 'read_pkgs_list': None, 'repo_tags': [], 'groupfile': None, 'distro': []}>