Comment 2 for bug 1055425

StacktraceTop:
 schedule_callbacks (connection=connection@entry=0x7f86400080b0, signal_data_array=0x1c671a0, message=message@entry=0x7f860c007f70, sender=sender@entry=0x7f86380051e0 "org.freedesktop.DBus") at /build/buildd/glib2.0-2.33.14/./gio/gdbusconnection.c:3780
 distribute_signals (message=0x7f860c007f70, connection=0x7f86400080b0) at /build/buildd/glib2.0-2.33.14/./gio/gdbusconnection.c:3853
 on_worker_message_received (worker=<optimized out>, message=0x7f860c007f70, user_data=<optimized out>) at /build/buildd/glib2.0-2.33.14/./gio/gdbusconnection.c:2356
 _g_dbus_worker_emit_message_received (message=0x7f860c007f70, worker=0x7f864000c0a0) at /build/buildd/glib2.0-2.33.14/./gio/gdbusprivate.c:492
 _g_dbus_worker_emit_message_received (message=0x7f860c007f70, worker=0x7f864000c0a0) at /build/buildd/glib2.0-2.33.14/./gio/gdbusprivate.c:571