#0  0x0000000000000000 in ?? ()
#1  0x00007f774c443245 in g_closure_set_meta_marshal (closure=0x2c78470, marshal_data=<optimized out>, meta_marshal=<optimized out>) at /build/buildd/glib2.0-2.41.5/./gobject/gclosure.c:331
  [Error: /build/buildd/glib2.0-2.41.5/./gobject/gclosure.c was not found in source tree]
#2  0x00007fff0d85a230 in ?? ()
#3  0x00007f774c15cb98 in g_hash_table_lookup_node (hash_return=<synthetic pointer>, key=0x2c78470, hash_table=0x2) at /build/buildd/glib2.0-2.41.5/./glib/ghash.c:368
  [Error: /build/buildd/glib2.0-2.41.5/./glib/ghash.c was not found in source tree]
#4  g_hash_table_lookup (hash_table=0x2, key=0x2c78470) at /build/buildd/glib2.0-2.41.5/./glib/ghash.c:1092
  [Error: /build/buildd/glib2.0-2.41.5/./glib/ghash.c was not found in source tree]
#5  0x00007f774c45480b in handler_list_ensure (instance=<optimized out>, signal_id=<optimized out>) at /build/buildd/glib2.0-2.41.5/./gobject/gsignal.c:393
  [Error: /build/buildd/glib2.0-2.41.5/./gobject/gsignal.c was not found in source tree]
#6  handler_insert (signal_id=<optimized out>, instance=<optimized out>, handler=<optimized out>) at /build/buildd/glib2.0-2.41.5/./gobject/gsignal.c:656
  [Error: /build/buildd/glib2.0-2.41.5/./gobject/gsignal.c was not found in source tree]
#7  0x00007f774c4480ef in weak_refs_notify (data=0x0) at /build/buildd/glib2.0-2.41.5/./gobject/gobject.c:2630
  [Error: /build/buildd/glib2.0-2.41.5/./gobject/gobject.c was not found in source tree]
#8  0x0000000000000000 in ?? ()