#0  0x00007f02eb85baf5 in g_mutex_lock (mutex=mutex@entry=0x30) at ../../../glib/gthread-posix.c:1354
  [Error: gthread-posix.c was not found in source tree]
#1  0x000055c0623fdaf4 in thunar_thumbnailer_queue_async_reply (proxy=0x55c0633cd9e0, res=0x55c062d8e8c0, user_data=user_data@entry=0x7f02a80c15a0) at thunar-thumbnailer.c:344
  339: 
  340:   thumbnailer = THUNAR_THUMBNAILER (job->thumbnailer);
  341: 
  342:   _thunar_return_if_fail (THUNAR_IS_THUMBNAILER (thumbnailer));
  343: 
  344:   _thumbnailer_lock (thumbnailer);
  345: 
  346:   thunar_thumbnailer_dbus_call_queue_finish (THUNAR_THUMBNAILER_DBUS (proxy), &handle, res, &error);
  347: 
  348:   if (job->cancelled)
  349:     {
#2  0x00007f02eb9e63d9 in g_task_return_now (task=0x55c062d8e8c0) at ../../../gio/gtask.c:1209
  [Error: gtask.c was not found in source tree]
#3  0x00007f02eb9e6ef3 in g_task_return (task=0x55c062d8e8c0, type=<optimized out>) at ../../../gio/gtask.c:1278
  [Error: gtask.c was not found in source tree]
#4  0x00007f02eb9e746c in g_task_return (type=G_TASK_RETURN_SUCCESS, task=<optimized out>) at ../../../gio/gtask.c:1678
  [Error: gtask.c was not found in source tree]
#5  g_task_return_pointer (task=<optimized out>, result=<optimized out>, result_destroy=<optimized out>) at ../../../gio/gtask.c:1683
  [Error: gtask.c was not found in source tree]
#6  0x00007f02eba49ebb in reply_cb (connection=<optimized out>, res=<optimized out>, user_data=0x55c062d8e8c0, user_data@entry=0x7f02dc0c3e70) at ../../../gio/gdbusproxy.c:2610
  [Error: gdbusproxy.c was not found in source tree]
#7  0x00007f02eb9e63d9 in g_task_return_now (task=0x7f02ac009c90) at ../../../gio/gtask.c:1209
  [Error: gtask.c was not found in source tree]
#8  0x00007f02eb9e6ef3 in g_task_return (task=0x7f02ac009c90, type=<optimized out>) at ../../../gio/gtask.c:1278
  [Error: gtask.c was not found in source tree]
#9  0x00007f02eb9e746c in g_task_return (type=G_TASK_RETURN_SUCCESS, task=<optimized out>) at ../../../gio/gtask.c:1678
  [Error: gtask.c was not found in source tree]
#10 g_task_return_pointer (task=<optimized out>, result=<optimized out>, result_destroy=<optimized out>) at ../../../gio/gtask.c:1683
  [Error: gtask.c was not found in source tree]
#11 0x00007f02eba3ea8a in g_dbus_connection_call_done (source=<optimized out>, result=0x55c062a4c570, user_data=0x55c0630a82d0, user_data@entry=0x7f02ac009c90) at ../../../gio/gdbusconnection.c:5747
  [Error: gdbusconnection.c was not found in source tree]
#12 0x00007f02eb9e63d9 in g_task_return_now (task=0x55c062a4c570) at ../../../gio/gtask.c:1209
  [Error: gtask.c was not found in source tree]
#13 0x00007f02eb9e6419 in complete_in_idle_cb (task=0x55c062a4c570) at ../../../gio/gtask.c:1223
  [Error: gtask.c was not found in source tree]
#14 0x00007f02eb8109b8 in g_main_dispatch (context=0x55c062a40920) at ../../../glib/gmain.c:3189
  [Error: gmain.c was not found in source tree]
#15 g_main_context_dispatch (context=context@entry=0x55c062a40920) at ../../../glib/gmain.c:3854
  [Error: gmain.c was not found in source tree]
#16 0x00007f02eb810da8 in g_main_context_iterate (context=context@entry=0x55c062a40920, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:3927
  [Error: gmain.c was not found in source tree]
#17 0x00007f02eb810e3c in g_main_context_iteration (context=context@entry=0x55c062a40920, may_block=may_block@entry=1) at ../../../glib/gmain.c:3988
  [Error: gmain.c was not found in source tree]
#18 0x00007f02eba12cbd in g_application_run (application=0x55c062a56130, argc=<optimized out>, argv=0x7fff978754c8) at ../../../gio/gapplication.c:2516
  [Error: gapplication.c was not found in source tree]
#19 0x000055c06239ba28 in main (argc=2, argv=0x7fff978754c8) at main.c:161
  156: 
  157:   /* use the Thunar icon as default for new windows */
  158:   gtk_window_set_default_icon_name ("Thunar");
  159: 
  160:   /* do further processing inside gapplication */
  161:   g_application_run (G_APPLICATION (application), argc, argv);
  162: 
  163:   /* Workaround to bypass "silent fail" if new thunar version is installed while an old version still runs as daemon */
  164:   /* FIXME: "g_application_register" and the following logic can be removed as soon as g_application/gdbus provides a way to prevent this error */
  165:   g_application_register (G_APPLICATION (application), NULL, &error);
  166:   if (error != NULL)