#0  g_logv (log_domain=0x7f1d80803b86 "Gdk", log_level=G_LOG_LEVEL_ERROR, format=<optimized out>, args=args@entry=0x7fff76b1bcc8) at /build/buildd/glib2.0-2.39.91/./glib/gmessages.c:1038
  [Error: /build/buildd/glib2.0-2.39.91/./glib/gmessages.c was not found in source tree]
#1  0x00007f1d7fab0d72 in g_log (log_domain=log_domain@entry=0x7f1d80803b86 "Gdk", log_level=log_level@entry=G_LOG_LEVEL_ERROR, format=format@entry=0x7f1d8081f6f7 "%s") at /build/buildd/glib2.0-2.39.91/./glib/gmessages.c:1071
  [Error: /build/buildd/glib2.0-2.39.91/./glib/gmessages.c was not found in source tree]
#2  0x00007f1d807e22e0 in _gdk_x11_display_error_event (display=display@entry=0xf55090, error=error@entry=0x7fff76b1be60) at /build/buildd/gtk+3.0-3.10.7/./gdk/x11/gdkdisplay-x11.c:2533
  [Error: /build/buildd/gtk+3.0-3.10.7/./gdk/x11/gdkdisplay-x11.c was not found in source tree]
#3  0x00007f1d807eaa01 in gdk_x_error (xdisplay=0xf457a0, error=0x7fff76b1be60) at /build/buildd/gtk+3.0-3.10.7/./gdk/x11/gdkmain-x11.c:303
  [Error: /build/buildd/gtk+3.0-3.10.7/./gdk/x11/gdkmain-x11.c was not found in source tree]
#4  0x00007f1d80a8054b in _XError (dpy=dpy@entry=0xf457a0, rep=rep@entry=0x124eee0) at ../../src/XlibInt.c:1463
  [Error: ../../src/XlibInt.c was not found in source tree]
#5  0x00007f1d80a7d5e7 in handle_error (dpy=0xf457a0, err=0x124eee0, in_XReply=<optimized out>) at ../../src/xcb_io.c:213
  [Error: ../../src/xcb_io.c was not found in source tree]
#6  0x00007f1d80a7d695 in handle_response (dpy=dpy@entry=0xf457a0, response=0x124eee0, in_XReply=in_XReply@entry=1) at ../../src/xcb_io.c:325
  [Error: ../../src/xcb_io.c was not found in source tree]
#7  0x00007f1d80a7e578 in _XReply (dpy=dpy@entry=0xf457a0, rep=rep@entry=0x7fff76b1c010, extra=extra@entry=0, discard=discard@entry=0) at ../../src/xcb_io.c:627
  [Error: ../../src/xcb_io.c was not found in source tree]
#8  0x00007f1d55477594 in __glXReadReply (dpy=dpy@entry=0xf457a0, size=size@entry=4, dest=dest@entry=0x7fff76b1c0bc, reply_is_always_array=reply_is_always_array@entry=0 '\000') at indirect.c:70
  [Error: indirect.c was not found in source tree]
#9  0x00007f1d5547da37 in __indirect_glGetTexLevelParameteriv (target=34039, level=0, pname=4096, params=0x7fff76b1c0bc) at indirect.c:3819
  [Error: indirect.c was not found in source tree]
#10 0x00007f1d57e593a7 in _cogl_texture_driver_size_supported (ctx=0x12efd50, gl_target=<optimized out>, gl_intformat=<optimized out>, gl_format=<optimized out>, gl_type=<optimized out>, width=<optimized out>, height=1) at ./driver/gl/gl/cogl-texture-driver-gl.c:483
  [Error: ./driver/gl/gl/cogl-texture-driver-gl.c was not found in source tree]
#11 0x00007f1d57e83f52 in _cogl_texture_rectangle_can_create (ctx=0x12efd50, width=1, height=1, internal_format=COGL_PIXEL_FORMAT_RGBA_8888_PRE, error=0x7fff76b1c1a8) at ./cogl-texture-rectangle.c:139
  [Error: ./cogl-texture-rectangle.c was not found in source tree]
#12 0x00007f1d57e841ba in cogl_texture_rectangle_new_from_bitmap (bmp=bmp@entry=0x1296500, internal_format=internal_format@entry=COGL_PIXEL_FORMAT_RGBA_8888_PRE, error=error@entry=0x7fff76b1c1a8) at ./cogl-texture-rectangle.c:294
  [Error: ./cogl-texture-rectangle.c was not found in source tree]
#13 0x00007f1d57e5bd80 in cogl_context_new (display=<optimized out>, error=<optimized out>) at ./cogl-context.c:459
  [Error: ./cogl-context.c was not found in source tree]
#14 0x00007f1d58135227 in ?? () from /tmp/apport_sandbox_a1QGCL/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#15 0x00007f1d5814c7f3 in ?? () from /tmp/apport_sandbox_a1QGCL/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#16 0x00007f1d5815deda in ?? () from /tmp/apport_sandbox_a1QGCL/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#17 0x00007f1d5815e0fb in ?? () from /tmp/apport_sandbox_a1QGCL/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#18 0x00007f1d7fab4e37 in g_option_context_parse (context=<optimized out>, argc=<optimized out>, argv=<optimized out>, error=<optimized out>) at /build/buildd/glib2.0-2.39.91/./glib/goption.c:2095
  [Error: /build/buildd/glib2.0-2.39.91/./glib/goption.c was not found in source tree]
#19 0x00007f1d5815ed40 in clutter_init () from /tmp/apport_sandbox_a1QGCL/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#20 0x00007f1d58cde7bc in cheese_gtk_init (argc=argc@entry=0x0, argv=argv@entry=0x0) at libcheese/cheese-gtk.c:58
  [Error: libcheese/cheese-gtk.c was not found in source tree]
#21 0x00007f1d593586d3 in g_io_module_load (module=0x12560c0) at um-user-module.c:38
  33: {
  34:   bindtextdomain (GETTEXT_PACKAGE, GNOMELOCALEDIR);
  35:   bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
  36: 
  37: #ifdef HAVE_CHEESE
  38:   cheese_gtk_init (NULL, NULL);
  39: #endif
  40: 
  41:   /* register the panel */
  42:   cc_user_panel_register (module);
  43: }
#22 0x00007f1d80485226 in g_io_module_load_module (gmodule=0x12560c0) at /build/buildd/glib2.0-2.39.91/./gio/giomodule.c:306
  [Error: /build/buildd/glib2.0-2.39.91/./gio/giomodule.c was not found in source tree]
#23 0x00007f1d7fd9d0a1 in g_type_module_use (module=module@entry=0x12560c0) at /build/buildd/glib2.0-2.39.91/./gobject/gtypemodule.c:244
  [Error: /build/buildd/glib2.0-2.39.91/./gobject/gtypemodule.c was not found in source tree]
#24 0x00007f1d80485605 in g_io_modules_load_all_in_directory_with_scope (dirname=dirname@entry=0x40c6e0 "/usr/lib/x86_64-linux-gnu/unity-control-center-1/panels", scope=scope@entry=0x0) at /build/buildd/glib2.0-2.39.91/./gio/giomodule.c:588
  [Error: /build/buildd/glib2.0-2.39.91/./gio/giomodule.c was not found in source tree]
#25 0x00007f1d80485677 in g_io_modules_load_all_in_directory (dirname=dirname@entry=0x40c6e0 "/usr/lib/x86_64-linux-gnu/unity-control-center-1/panels") at /build/buildd/glib2.0-2.39.91/./gio/giomodule.c:627
  [Error: /build/buildd/glib2.0-2.39.91/./gio/giomodule.c was not found in source tree]
#26 0x000000000040a17a in load_panel_plugins (shell=0x7f1d70006700) at gnome-control-center.c:1088
  1083: 
  1084:   shell->priv->extension_point
  1085:     = g_io_extension_point_register (CC_SHELL_PANEL_EXTENSION_POINT);
  1086: 
  1087:   /* load all the plugins in the panels directory */
  1088:   modules = g_io_modules_load_all_in_directory (PANELS_DIR);
  1089:   g_list_free (modules);
  1090: 
  1091:   /* hardcoded fallback from pre-multiarching */
  1092:   modules = g_io_modules_load_all_in_directory ("/usr/lib/control-center-1/panels");
  1093:   g_list_free (modules);
#27 gnome_control_center_init (self=0x7f1d70006700) at gnome-control-center.c:1632
  1627: 
  1628:   /* load the available settings panels */
  1629:   setup_model (self);
  1630: 
  1631:   /* load the panels that are implemented as plugins */
  1632:   load_panel_plugins (self);
  1633: 
  1634:   /* setup search functionality */
  1635:   setup_search (self);
  1636: 
  1637:   setup_lock (self);
#28 0x00007f1d7fd99e3b in g_type_create_instance (type=<optimized out>) at /build/buildd/glib2.0-2.39.91/./gobject/gtype.c:1868
  [Error: /build/buildd/glib2.0-2.39.91/./gobject/gtype.c was not found in source tree]
#29 0x00007f1d7fd7e355 in g_object_new_internal (class=class@entry=0xfa4a80, params=params@entry=0x0, n_params=n_params@entry=0) at /build/buildd/glib2.0-2.39.91/./gobject/gobject.c:1724
  [Error: /build/buildd/glib2.0-2.39.91/./gobject/gobject.c was not found in source tree]
#30 0x00007f1d7fd8010d in g_object_newv (object_type=object_type@entry=16401936, n_parameters=n_parameters@entry=0, parameters=parameters@entry=0x0) at /build/buildd/glib2.0-2.39.91/./gobject/gobject.c:1868
  [Error: /build/buildd/glib2.0-2.39.91/./gobject/gobject.c was not found in source tree]
#31 0x00007f1d7fd808bc in g_object_new (object_type=16401936, first_property_name=first_property_name@entry=0x0) at /build/buildd/glib2.0-2.39.91/./gobject/gobject.c:1568
  [Error: /build/buildd/glib2.0-2.39.91/./gobject/gobject.c was not found in source tree]
#32 0x000000000040aaa9 in gnome_control_center_new () at gnome-control-center.c:1649
  1644: }
  1645: 
  1646: GnomeControlCenter *
  1647: gnome_control_center_new (void)
  1648: {
  1649:   return g_object_new (GNOME_TYPE_CONTROL_CENTER, NULL);
  1650: }
  1651: 
  1652: void
  1653: gnome_control_center_present (GnomeControlCenter *center)
  1654: {
#33 0x0000000000407482 in main (argc=2, argv=0x7fff76b1c8f8) at control-center.c:333
  328:   /* register a symbolic icon size for use in sidebar lists */
  329:   gtk_icon_size_register ("cc-sidebar-list", 24, 24);
  330: 
  331:   notify_init ("gnome-control-center");
  332: 
  333:   shell = gnome_control_center_new ();
  334: 
  335:   /* enforce single instance of this application */
  336:   application = gtk_application_new ("org.gnome.ControlCenter", G_APPLICATION_HANDLES_COMMAND_LINE);
  337:   g_signal_connect (application, "startup",
  338:                     G_CALLBACK (application_startup_cb), shell);