jockey-text crashed with "the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken."

[Manish Sinha (मनीष सिन्हा)]

If jockey-gtk is running and an attempt is made to run jocket-text, then the latter crashes with this error

ERROR:dbus.proxies:Introspect error on :1.69:/DeviceDriver: dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
Traceback (most recent call last):
  File "/usr/bin/jockey-text", line 128, in <module>
    sys.exit(u.run())
  File "/usr/lib/python2.7/dist-packages/jockey/ui.py", line 470, in run
    self.backend().shutdown()
  File "/usr/lib/python2.7/dist-packages/jockey/ui.py", line 130, in backend
    self._check_repositories()
  File "/usr/lib/python2.7/dist-packages/jockey/ui.py", line 842, in _check_repositories
    if self._dbus_iface.has_repositories():
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 70, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 145, in __call__
    **keywords)
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

The error should be handeled gracefully.