Comment 2 for bug 859626

StacktraceTop:
 device_found (adapter=0x221a2c0, address=<optimized out>, hash=0x22bdf60, user_data=0x22d4cc0) at bluetooth-client.c:583
 marshal_dbus_message_to_g_marshaller (closure=0x22f25c0, return_value=0x0, n_param_values=<optimized out>, param_values=<optimized out>, invocation_hint=0x7fff84d29930, marshal_data=0x0) at dbus-gproxy.c:1733
 g_closure_invoke (closure=0x22f25c0, return_value=0x0, n_param_values=3, param_values=0x7f8940005370, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.29.92/./gobject/gclosure.c:774
 signal_emit_unlocked_R (node=<optimized out>, detail=1898, instance=0x221a2c0, emission_return=0x0, instance_and_params=0x7f8940005370) at /build/buildd/glib2.0-2.29.92/./gobject/gsignal.c:3272
 g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=0x7fff84d29b18) at /build/buildd/glib2.0-2.29.92/./gobject/gsignal.c:3003