#0  build_file_list_from_uris (uris=0x0) at /build/buildd/gtk+3.0-3.12.2/./gtk/gtkplacessidebar.c:1742
  [Error: /build/buildd/gtk+3.0-3.12.2/./gtk/gtkplacessidebar.c was not found in source tree]
#1  0x00007f318eb9b53a in drag_data_received_callback (widget=0x2476bb0, context=0x2745450, x=0, y=0, selection_data=0x7fffc5279770, info=<optimized out>, time=30928519, sidebar=0x258c190) at /build/buildd/gtk+3.0-3.12.2/./gtk/gtkplacessidebar.c:1833
  [Error: /build/buildd/gtk+3.0-3.12.2/./gtk/gtkplacessidebar.c was not found in source tree]
#2  0x00007f318eb5e92d in _gtk_marshal_VOID__OBJECT_INT_INT_BOXED_UINT_UINT (closure=0x1d7ee87, return_value=0x2745450, n_param_values=0, param_values=0x7fffc5278e70, invocation_hint=0x49, marshal_data=0x0) at /build/buildd/gtk+3.0-3.12.2/./gtk/gtkmarshalers.c:5444
  [Error: /build/buildd/gtk+3.0-3.12.2/./gtk/gtkmarshalers.c was not found in source tree]
#3  0x00007f318c4403b8 in ?? ()
#4  0x0000000000000000 in ?? ()