#0  0x00000000004063bd in panel_indicator_entry_accessible_get_n_children (accessible=<optimized out>) at /build/buildd/unity-6.2.0/services/panel-indicator-entry-accessible.c:256
  [Error: /build/buildd/unity-6.2.0/services/panel-indicator-entry-accessible.c was not found in source tree]
#1  0x00007faf3734b47c in append_children (traversal=0x1d68ec0, accessible=0x2094690) at accessible-cache.c:235
  [Error: accessible-cache.c was not found in source tree]
#2  add_pending_items (data=<optimized out>) at accessible-cache.c:291
  [Error: accessible-cache.c was not found in source tree]
#3  0x00007faf38baecd5 in g_main_dispatch (context=0x1c27cd0) at /build/buildd/glib2.0-2.33.8/./glib/gmain.c:2707
  [Error: /build/buildd/glib2.0-2.33.8/./glib/gmain.c was not found in source tree]
#4  g_main_context_dispatch (context=context@entry=0x1c27cd0) at /build/buildd/glib2.0-2.33.8/./glib/gmain.c:3211
  [Error: /build/buildd/glib2.0-2.33.8/./glib/gmain.c was not found in source tree]
#5  0x00007faf38baf008 in g_main_context_iterate (context=0x1c27cd0, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.8/./glib/gmain.c:3282
  [Error: /build/buildd/glib2.0-2.33.8/./glib/gmain.c was not found in source tree]
#6  0x00007faf38baf402 in g_main_loop_run (loop=0x1ec6e70) at /build/buildd/glib2.0-2.33.8/./glib/gmain.c:3476
  [Error: /build/buildd/glib2.0-2.33.8/./glib/gmain.c was not found in source tree]
#7  0x00007faf3a1e1d45 in gtk_main () at /build/buildd/gtk+3.0-3.5.10/./gtk/gtkmain.c:1162
  [Error: /build/buildd/gtk+3.0-3.5.10/./gtk/gtkmain.c was not found in source tree]
#8  0x0000000000404fc2 in main (argc=1, argv=0x7fff709bf268) at /build/buildd/unity-6.2.0/services/panel-main.c:431
  [Error: /build/buildd/unity-6.2.0/services/panel-main.c was not found in source tree]