#0  g_hash_table_lookup_node (hash_return=<optimized out>, key=<optimized out>, hash_table=<optimized out>) at ../../../../glib/ghash.c:377
  [Error: ghash.c was not found in source tree]
#1  g_hash_table_lookup (hash_table=0x3ff0000000000000, key=key@entry=0x3) at ../../../../glib/ghash.c:1153
  [Error: ghash.c was not found in source tree]
#2  0x000055ef55e9c909 in handle_ungrab_accelerator (dbus_shell=0x55ef58439ad0, invocation=0x7fb71c000c00, action=3, user_data=<optimized out>) at flashback-shell.c:377
  372:   gchar *sender;
  373: 	gboolean success;
  374: 
  375:   shell = FLASHBACK_SHELL (user_data);
  376:   success = FALSE;
  377:   sender = (gchar *) g_hash_table_lookup (shell->grabbed_accelerators,
  378:                                           GUINT_TO_POINTER (action));
  379: 
  380:   if (g_str_equal (sender, g_dbus_method_invocation_get_sender (invocation)))
  381:     {
  382:       success = real_ungrab (shell, action);
#3  0x00007fb72a18adae in ffi_call_unix64 () at ../src/x86/unix64.S:76
  [Error: unix64.S was not found in source tree]
#4  0x00007fb72a18a71f in ffi_call (cif=cif@entry=0x7ffdf1a83750, fn=fn@entry=0x55ef55e9c8d0 <handle_ungrab_accelerator>, rvalue=<optimized out>, avalue=avalue@entry=0x7ffdf1a83660) at ../src/x86/ffi64.c:525
  [Error: ffi64.c was not found in source tree]
#5  0x00007fb72fc63761 in g_cclosure_marshal_generic (closure=0x55ef584ec710, return_gvalue=0x7ffdf1a83920, n_param_values=<optimized out>, param_values=<optimized out>, invocation_hint=<optimized out>, marshal_data=<optimized out>) at ../../../../gobject/gclosure.c:1490
  [Error: gclosure.c was not found in source tree]
#6  0x00007fb72fc62f6d in g_closure_invoke (closure=0x55ef584ec710, return_value=0x7ffdf1a83920, n_param_values=3, param_values=0x55ef58450610, invocation_hint=0x7ffdf1a83900) at ../../../../gobject/gclosure.c:804
  [Error: gclosure.c was not found in source tree]
#7  0x00007fb72fc75d3e in signal_emit_unlocked_R (node=node@entry=0x55ef584b36d0, detail=detail@entry=0, instance=instance@entry=0x55ef58439ad0, emission_return=emission_return@entry=0x7ffdf1a83a50, instance_and_params=instance_and_params@entry=0x55ef58450610) at ../../../../gobject/gsignal.c:3635
  [Error: gsignal.c was not found in source tree]
#8  0x00007fb72fc7d960 in g_signal_emitv (instance_and_params=instance_and_params@entry=0x55ef58450610, signal_id=signal_id@entry=441, detail=detail@entry=0, return_value=return_value@entry=0x7ffdf1a83a50) at ../../../../gobject/gsignal.c:3129
  [Error: gsignal.c was not found in source tree]
#9  0x000055ef55e9fb99 in _flashback_dbus_shell_skeleton_handle_method_call (connection=<optimized out>, sender=<optimized out>, object_path=<optimized out>, interface_name=0x7fb718045210 "org.gnome.Shell", method_name=0x7fb718037b40 "UngrabAccelerator", parameters=<optimized out>, invocation=0x7fb71c000c00, user_data=0x55ef58439ad0) at flashback-dbus-shell.c:3014
  3009:         g_dbus_gvariant_to_gvalue (child, &paramv[n++]);
  3010:       g_variant_unref (child);
  3011:     }
  3012:   signal_id = g_signal_lookup (info->signal_name, FLASHBACK_TYPE_DBUS_SHELL);
  3013:   g_value_init (&return_value, G_TYPE_BOOLEAN);
  3014:   g_signal_emitv (paramv, signal_id, 0, &return_value);
  3015:   if (!g_value_get_boolean (&return_value))
  3016:     g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD, "Method %s is not implemented on interface %s", method_name, interface_name);
  3017:   g_value_unset (&return_value);
  3018:   for (n = 0; n < num_params + num_extra; n++)
  3019:     g_value_unset (&paramv[n]);
#10 0x00007fb72ff7e3d7 in g_dbus_interface_method_dispatch_helper (interface=<optimized out>, method_call_func=0x55ef55e9f9e0 <_flashback_dbus_shell_skeleton_handle_method_call>, invocation=0x7fb71c000c00) at ../../../../gio/gdbusinterfaceskeleton.c:609
  [Error: gdbusinterfaceskeleton.c was not found in source tree]
#11 0x00007fb72ff6659c in call_in_idle_cb (user_data=0x7fb71c000c00) at ../../../../gio/gdbusconnection.c:4851
  [Error: gdbusconnection.c was not found in source tree]
#12 0x00007fb72f9890f5 in g_main_dispatch (context=0x55ef57f1bbc0) at ../../../../glib/gmain.c:3177
  [Error: gmain.c was not found in source tree]
#13 g_main_context_dispatch (context=context@entry=0x55ef57f1bbc0) at ../../../../glib/gmain.c:3830
  [Error: gmain.c was not found in source tree]
#14 0x00007fb72f9894c0 in g_main_context_iterate (context=0x55ef57f1bbc0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3903
  [Error: gmain.c was not found in source tree]
#15 0x00007fb72f9897d2 in g_main_loop_run (loop=0x55ef57fc5e60) at ../../../../glib/gmain.c:4099
  [Error: gmain.c was not found in source tree]
#16 0x000055ef55e52387 in main (argc=<optimized out>, argv=<optimized out>) at gf-main.c:163
  158:     return EXIT_FAILURE;
  159: 
  160:   loop = g_main_loop_new (NULL, FALSE);
  161:   session = gf_session_new (replace, session_ready_cb, session_end_cb, NULL);
  162: 
  163:   g_main_loop_run (loop);
  164: 
  165:   g_object_unref (session);
  166:   g_main_loop_unref (loop);
  167: 
  168:   return EXIT_SUCCESS;