#0  fast_validate (str=<optimized out>) at /build/buildd/glib2.0-2.33.6/./glib/gutf8.c:1461
  [Error: /build/buildd/glib2.0-2.33.6/./glib/gutf8.c was not found in source tree]
#1  g_utf8_validate (str=str@entry=0x51 <Address 0x51 out of bounds>, max_len=max_len@entry=-1, end=end@entry=0x0) at /build/buildd/glib2.0-2.33.6/./glib/gutf8.c:1629
  [Error: /build/buildd/glib2.0-2.33.6/./glib/gutf8.c was not found in source tree]
#2  0x00007f28ee317767 in g_variant_new_string (string=0x51 <Address 0x51 out of bounds>) at /build/buildd/glib2.0-2.33.6/./glib/gvariant.c:1270
  [Error: /build/buildd/glib2.0-2.33.6/./glib/gvariant.c was not found in source tree]
#3  0x00007f28ee31793a in g_variant_new_strv (strv=strv@entry=0x2237a80, length=<optimized out>, length@entry=-1) at /build/buildd/glib2.0-2.33.6/./glib/gvariant.c:1497
  [Error: /build/buildd/glib2.0-2.33.6/./glib/gvariant.c was not found in source tree]
#4  0x00007f28eeabd028 in g_settings_set_strv (settings=settings@entry=0x7f28dc0061e0, key=key@entry=0x7f28ef8cee8a "blacklisted-media-players", value=value@entry=0x2237a80) at /build/buildd/glib2.0-2.33.6/./gio/gsettings.c:1875
  [Error: /build/buildd/glib2.0-2.33.6/./gio/gsettings.c was not found in source tree]
#5  0x00007f28ef8bee11 in unity_blacklist_manager_add_to_blacklist (self=<optimized out>) at unity-sound-menu-mpris.c:2405
  [Error: unity-sound-menu-mpris.c was not found in source tree]
#6  unity_blacklist_manager_consumer_blacklist_change (self=<optimized out>) at unity-sound-menu-mpris.c:2189
  [Error: unity-sound-menu-mpris.c was not found in source tree]
#7  _unity_blacklist_manager_consumer_blacklist_change_g_object_notify (_sender=<optimized out>, pspec=<optimized out>, self=<optimized out>) at unity-sound-menu-mpris.c:2156
  [Error: unity-sound-menu-mpris.c was not found in source tree]
#8  0x00007f28ee5a8050 in g_closure_invoke (closure=0x23afc10, return_value=0x0, n_param_values=2, param_values=0x7fff296285b0, invocation_hint=0x7fff29628550) at /build/buildd/glib2.0-2.33.6/./gobject/gclosure.c:777
  [Error: /build/buildd/glib2.0-2.33.6/./gobject/gclosure.c was not found in source tree]
#9  0x00007f28ee5b9d30 in signal_emit_unlocked_R (node=node@entry=0x21c6a20, detail=detail@entry=1886, instance=instance@entry=0x2335700, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff296285b0) at /build/buildd/glib2.0-2.33.6/./gobject/gsignal.c:3551
  [Error: /build/buildd/glib2.0-2.33.6/./gobject/gsignal.c was not found in source tree]
#10 0x00007f28ee5c1fb1 in g_signal_emit_valist (instance=0x2335700, signal_id=<optimized out>, detail=1886, var_args=var_args@entry=0x7fff29628808) at /build/buildd/glib2.0-2.33.6/./gobject/gsignal.c:3300
  [Error: /build/buildd/glib2.0-2.33.6/./gobject/gsignal.c was not found in source tree]
#11 0x00007f28ee5c2202 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.33.6/./gobject/gsignal.c:3356
  [Error: /build/buildd/glib2.0-2.33.6/./gobject/gsignal.c was not found in source tree]
#12 0x00007f28ee5acb95 in g_object_dispatch_properties_changed (object=0x2335700, n_pspecs=4294967295, pspecs=0x0) at /build/buildd/glib2.0-2.33.6/./gobject/gobject.c:1041
  [Error: /build/buildd/glib2.0-2.33.6/./gobject/gobject.c was not found in source tree]
#13 0x00007f28ee5ae64b in g_object_notify_by_spec_internal (pspec=0x7f28dc003b70, object=0x2335700) at /build/buildd/glib2.0-2.33.6/./gobject/gobject.c:1135
  [Error: /build/buildd/glib2.0-2.33.6/./gobject/gobject.c was not found in source tree]
#14 g_object_notify (object=0x2335700, property_name=property_name@entry=0x7f28ef8cf103 "is-blacklisted") at /build/buildd/glib2.0-2.33.6/./gobject/gobject.c:1177
  [Error: /build/buildd/glib2.0-2.33.6/./gobject/gobject.c was not found in source tree]
#15 0x00007f28ef8bbe48 in unity_music_player_set_is_blacklisted (self=<optimized out>, value=value@entry=1) at unity-sound-menu.c:1077
  [Error: unity-sound-menu.c was not found in source tree]
#16 0x0000000000411554 in unity_webapps_music_player_context_free (music_player_context=0x22ffad0) at unity-webapps-music-player-context.c:593
  588:   
  589:   g_hash_table_destroy (music_player_context->playlist_names_by_id);
  590: 
  591:   if (music_player_context->music_player)
  592:     {
  593:       unity_music_player_set_is_blacklisted (music_player_context->music_player, TRUE);
  594:       
  595: #ifdef HAVE_UNITY_MUSIC_PLAYER_EXPORT
  596:       unity_music_player_unexport (music_player_context->music_player);
  597: #endif
  598:       g_object_unref (G_OBJECT (music_player_context->music_player));
#17 0x0000000000408d50 in unity_webapps_context_daemon_free (daemon=0x21ed170) at unity-webapps-context-daemon.c:1172
  1167:   g_hash_table_destroy (daemon->interest_vanished_ids);
  1168:   g_hash_table_destroy (daemon->name_interest_counts);
  1169:   
  1170:   unity_webapps_notification_context_free (daemon->notification_context);
  1171:   unity_webapps_indicator_context_free (daemon->indicator_context);
  1172:   unity_webapps_music_player_context_free (daemon->music_player_context);
  1173:   unity_webapps_launcher_context_free (daemon->launcher_context);
  1174:   
  1175:   
  1176:   g_free (daemon->desktop_file_name);
  1177:   g_free (daemon->icon_file_name);
#18 0x0000000000408db6 in on_handle_shutdown (context=<optimized out>, invocation=<optimized out>, user_data=0x21ed170) at unity-webapps-context-daemon.c:860
  855:   
  856:   g_dbus_method_invocation_return_value (invocation, NULL);
  857:   g_dbus_connection_flush_sync (session_bus, NULL, NULL);
  858:   
  859:   // TODO: Really should only do this in debug mode?
  860:   unity_webapps_context_daemon_free (context_daemon);
  861:   
  862:   exit (0);
  863:   
  864:   return TRUE;
  865: }
#19 0x00007f28e9ec4bb8 in ffi_call_unix64 () at ../src/x86/unix64.S:75
  [Error: ../src/x86/unix64.S was not found in source tree]
#20 0x00007f28e9ec45c0 in ffi_call (cif=cif@entry=0x7fff29628b70, fn=fn@entry=0x408d90 <on_handle_shutdown>, rvalue=0x7fff29628ad0, avalue=avalue@entry=0x7fff29628a70) at ../src/x86/ffi64.c:492
  [Error: ../src/x86/ffi64.c was not found in source tree]
#21 0x00007f28ee5a89bb in g_cclosure_marshal_generic (closure=0x2369da0, return_gvalue=0x7fff29628d10, n_param_values=<optimized out>, param_values=<optimized out>, invocation_hint=<optimized out>, marshal_data=0x408d90) at /build/buildd/glib2.0-2.33.6/./gobject/gclosure.c:1454
  [Error: /build/buildd/glib2.0-2.33.6/./gobject/gclosure.c was not found in source tree]
#22 0x00007f28ee5a8050 in g_closure_invoke (closure=0x2369da0, return_value=0x7fff29628d10, n_param_values=2, param_values=0x23a8490, invocation_hint=0x7fff29628d60) at /build/buildd/glib2.0-2.33.6/./gobject/gclosure.c:777
  [Error: /build/buildd/glib2.0-2.33.6/./gobject/gclosure.c was not found in source tree]
#23 0x00007f28ee5b9d30 in signal_emit_unlocked_R (node=node@entry=0x2354050, detail=detail@entry=0, instance=instance@entry=0x22dbc40, emission_return=emission_return@entry=0x7fff29628e90, instance_and_params=instance_and_params@entry=0x23a8490) at /build/buildd/glib2.0-2.33.6/./gobject/gsignal.c:3551
  [Error: /build/buildd/glib2.0-2.33.6/./gobject/gsignal.c was not found in source tree]
#24 0x00007f28ee5c10f9 in g_signal_emitv (instance_and_params=instance_and_params@entry=0x23a8490, signal_id=signal_id@entry=298, detail=detail@entry=0, return_value=return_value@entry=0x7fff29628e90) at /build/buildd/glib2.0-2.33.6/./gobject/gsignal.c:3041
  [Error: /build/buildd/glib2.0-2.33.6/./gobject/gsignal.c was not found in source tree]
#25 0x0000000000414c00 in _unity_webapps_gen_context_skeleton_handle_method_call (connection=<optimized out>, sender=<optimized out>, object_path=<optimized out>, interface_name=0x7f28dc002f80 "com.canonical.Unity.Webapps.Context", method_name=0x7f28dc00bcf0 "Shutdown", parameters=<optimized out>, invocation=0x23300c0, user_data=0x22dbc40) at ../unity-webapps-gen-context.c:6707
  [Error: ../unity-webapps-gen-context.c was not found in source tree]
#26 0x00007f28eeae6016 in g_dbus_interface_method_dispatch_helper (invocation=0x23300c0, method_call_func=0x414a70 <_unity_webapps_gen_context_skeleton_handle_method_call>, interface=<optimized out>) at /build/buildd/glib2.0-2.33.6/./gio/gdbusinterfaceskeleton.c:615
  [Error: /build/buildd/glib2.0-2.33.6/./gio/gdbusinterfaceskeleton.c was not found in source tree]
#27 skeleton_intercept_handle_method_call (connection=<optimized out>, sender=<optimized out>, object_path=<optimized out>, interface_name=<optimized out>, method_name=<optimized out>, parameters=<optimized out>, invocation=0x23300c0, user_data=0x22dbc40) at /build/buildd/glib2.0-2.33.6/./gio/gdbusinterfaceskeleton.c:655
  [Error: /build/buildd/glib2.0-2.33.6/./gio/gdbusinterfaceskeleton.c was not found in source tree]
#28 0x00007f28eeacdaa2 in call_in_idle_cb (user_data=<optimized out>) at /build/buildd/glib2.0-2.33.6/./gio/gdbusconnection.c:4737
  [Error: /build/buildd/glib2.0-2.33.6/./gio/gdbusconnection.c was not found in source tree]
#29 0x00007f28ee2e9c65 in g_main_dispatch (context=0x21ed460) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:2691
  [Error: /build/buildd/glib2.0-2.33.6/./glib/gmain.c was not found in source tree]
#30 g_main_context_dispatch (context=context@entry=0x21ed460) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3195
  [Error: /build/buildd/glib2.0-2.33.6/./glib/gmain.c was not found in source tree]
#31 0x00007f28ee2e9f98 in g_main_context_iterate (context=0x21ed460, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3266
  [Error: /build/buildd/glib2.0-2.33.6/./glib/gmain.c was not found in source tree]
#32 0x00007f28ee2ea392 in g_main_loop_run (loop=0x2302630) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3460
  [Error: /build/buildd/glib2.0-2.33.6/./glib/gmain.c was not found in source tree]
#33 0x0000000000407c8b in main (argc=5, argv=0x7fff29629258) at unity-webapps-context-daemon.c:334
  329:   g_bus_get(G_BUS_TYPE_SESSION,
  330: 	    NULL, /* Cancellable */
  331: 	    bus_get_cb,
  332: 	    NULL /* User data */);
  333:   mainloop = g_main_loop_new(NULL, FALSE);
  334:   g_main_loop_run(mainloop);
  335: 
  336:   return 0;
  337: }
  338: 
  339: static gboolean