#0  0x00007fd3a23b18fb in g_hash_table_remove () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6600.0
#1  0x00007fd3a22e14f2 in window_weak_notify_cb (data=<optimized out>, where_the_window_was=0x5586ec93a100) at ../libwnck/class-group.c:514
  [Error: class-group.c was not found in source tree]
#2  0x00007fd3a24bab57 in weak_refs_notify () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#3  0x00007fd3a23a405e in g_data_set_internal () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6600.0
#4  0x00007fd3a24bbd23 in g_object_unref () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#5  0x00007fd37bce355c in block2_data_unref (_userdata_=0x5586ecb038e0) at budgie-visualspace/src/libvisualspace.so.p/visualspace.c:762
  [Error: visualspace.c was not found in source tree]
#6  block2_data_unref (_userdata_=0x5586ecb038e0) at budgie-visualspace/src/libvisualspace.so.p/visualspace.c:755
  [Error: visualspace.c was not found in source tree]
#7  0x00007fd3a24b5fe0 in g_closure_unref () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#8  0x00007fd3a24ce0c0 in g_signal_handlers_destroy () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#9  0x00007fd3a24bb4f1 in g_object_real_dispose () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#10 0x00007fd3a24bd0f1 in g_object_run_dispose () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#11 0x00007fd3a2b27f80 in gtk_grid_forall (container=<optimized out>, include_internals=<optimized out>, callback=0x7fd3a2cbf030 <gtk_widget_destroy>, callback_data=0x0) at ../../../../gtk/gtkgrid.c:540
  [Error: gtkgrid.c was not found in source tree]
#12 0x00007fd3a2a94e6a in gtk_container_destroy (widget=0x5586ed1f2590) at ../../../../gtk/gtkcontainer.c:1701
  [Error: gtkcontainer.c was not found in source tree]
#13 0x00007fd3a24b68fa in g_closure_invoke () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#14 0x00007fd3a24c942d in signal_emit_unlocked_R.isra.0 () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#15 0x00007fd3a24cfc21 in g_signal_emit_valist () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#16 0x00007fd3a24cfd83 in g_signal_emit () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#17 0x00007fd3a2cc7c80 in gtk_widget_dispose (object=0x5586ed1f2590) at ../../../../gtk/gtkwidget.c:12162
  [Error: gtkwidget.c was not found in source tree]
#18 0x00007fd3a24bd0f1 in g_object_run_dispose () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#19 0x00007fd37bce2fb1 in ____lambda8_ (_data3_=<optimized out>) at budgie-visualspace/src/libvisualspace.so.p/visualspace.c:1212
  [Error: visualspace.c was not found in source tree]
#20 _____lambda8__gsource_func (self=<optimized out>) at budgie-visualspace/src/libvisualspace.so.p/visualspace.c:1212
  [Error: visualspace.c was not found in source tree]
#21 0x00007fd3a23c43ef in g_main_context_dispatch () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6600.0
#22 0x00007fd3a23c4798 in g_main_context_iterate.constprop () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6600.0
#23 0x00007fd3a23c4ab3 in g_main_loop_run () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6600.0
#24 0x00007fd3790c512d in zeitgeist_log_construct (object_type=<optimized out>) at log.c:1199
  [Error: log.c was not found in source tree]
#25 0x00007fd3790c6239 in zeitgeist_log_new () at log.c:1208
  [Error: log.c was not found in source tree]
#26 0x00007fd37923128e in synapse_zeitgeist_relevancy_backend_constructor (type=<optimized out>, n_construct_properties=0, construct_properties=<optimized out>) at budgie-applications-menu/applications-menu/src/libslingshot.so.p/synapse-core/relevancy-backend-zg.c:1247
  [Error: relevancy-backend-zg.c was not found in source tree]
#27 0x00007fd3a24bc4ad in g_object_new_internal () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#28 0x00007fd3a24bd72d in g_object_new_with_properties () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#29 0x00007fd3a24be3b1 in g_object_new () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#30 0x00007fd37923115d in synapse_zeitgeist_relevancy_backend_construct (object_type=<optimized out>) at budgie-applications-menu/applications-menu/src/libslingshot.so.p/synapse-core/relevancy-backend-zg.c:1215
  [Error: relevancy-backend-zg.c was not found in source tree]
#31 0x00007fd379231189 in synapse_zeitgeist_relevancy_backend_new () at budgie-applications-menu/applications-menu/src/libslingshot.so.p/synapse-core/relevancy-backend-zg.c:1222
  [Error: relevancy-backend-zg.c was not found in source tree]
#32 0x00007fd37922d748 in synapse_relevancy_service_initialize_relevancy_backend (self=0x7fd394022b10) at budgie-applications-menu/applications-menu/src/libslingshot.so.p/synapse-core/relevancy-service.c:247
  [Error: relevancy-service.c was not found in source tree]
#33 synapse_relevancy_service_constructor (type=<optimized out>, n_construct_properties=0, construct_properties=0x0) at budgie-applications-menu/applications-menu/src/libslingshot.so.p/synapse-core/relevancy-service.c:331
  [Error: relevancy-service.c was not found in source tree]
#34 0x00007fd3a24bc4ad in g_object_new_internal () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#35 0x00007fd3a24bd72d in g_object_new_with_properties () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#36 0x00007fd3a24be3b1 in g_object_new () from /tmp/apport_sandbox__bij7tvh/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6600.0
#37 0x00007fd37922d67d in synapse_relevancy_service_construct (object_type=<optimized out>) at budgie-applications-menu/applications-menu/src/libslingshot.so.p/synapse-core/relevancy-service.c:232
  [Error: relevancy-service.c was not found in source tree]
#38 synapse_relevancy_service_new () at budgie-applications-menu/applications-menu/src/libslingshot.so.p/synapse-core/relevancy-service.c:239
  [Error: relevancy-service.c was not found in source tree]
#39 synapse_relevancy_service_get_default () at budgie-applications-menu/applications-menu/src/libslingshot.so.p/synapse-core/relevancy-service.c:217
  [Error: relevancy-service.c was not found in source tree]
#40 0x0000000000000001 in ?? ()
#41 0x0000000000000000 in ?? ()