Description of problem:
wanted to run dnf update, but dnf failed during package download

Version-Release number of selected component:
dnf-1.1.2-4.fc22

Additional info:
reporter:       libreport-2.6.2
cmdline:        /usr/bin/python -OO /bin/dnf update
executable:     /bin/dnf
kernel:         4.1.8-200.fc22.x86_64
runlevel:       N 5
type:           Python
uid:            0

Truncated backtrace:
drpm.py:131:job_done:KeyError: 9252

Traceback (most recent call last):
  File "/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 198, 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 144, in _main
    ret = resolving(cli, base)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 173, in resolving
    base.do_transaction(display=displays)
  File "/usr/lib/python2.7/site-packages/dnf/cli/cli.py", line 212, in do_transaction
    total_cb)
  File "/usr/lib/python2.7/site-packages/dnf/base.py", line 875, in download_packages
    errors = dnf.repo.download_payloads(payloads, drpm)
  File "/usr/lib/python2.7/site-packages/dnf/repo.py", line 126, in download_payloads
    librepo.download_packages(targets, failfast=True)
  File "/usr/lib64/python2.7/site-packages/librepo/__init__.py", line 1505, in download_packages
    return _librepo.download_packages(list, failfast)
  File "/usr/lib/python2.7/site-packages/dnf/util.py", line 144, in new_func
    name = '%s.%s' % (args[0].__class__.__name__, fn.__name__)
  File "/usr/lib/python2.7/site-packages/dnf/repo.py", line 317, in _progress_cb
    self.progress.progress(self, done)
  File "/usr/lib/python2.7/site-packages/dnf/cli/progress.py", line 69, in progress
    text = unicode(payload)
  File "/usr/lib/python2.7/site-packages/dnf/util.py", line 144, in new_func
    name = '%s.%s' % (args[0].__class__.__name__, fn.__name__)
  File "/usr/lib/python2.7/site-packages/dnf/repo.py", line 317, in _progress_cb
    self.progress.progress(self, done)
  File "/usr/lib/python2.7/site-packages/dnf/cli/progress.py", line 69, in progress
    text = unicode(payload)
  File "/usr/lib/python2.7/site-packages/dnf/drpm.py", line 53, in _end_cb
    self.delta_info.enqueue(self)
  File "/usr/lib/python2.7/site-packages/dnf/drpm.py", line 158, in enqueue
    self.job_done(pid, code)
  File "/usr/lib/python2.7/site-packages/dnf/drpm.py", line 131, in job_done
    pload = self.jobs.pop(pid)
KeyError: 9252

Local variables in innermost frame:
self: <dnf.drpm.DeltaInfo object at 0x7fb5f9b6db50>
code: 0
pid: 9252