#0  0x0000000081564b98 in ?? ()
#1  0x00000000012e9590 in ?? ()
#2  0x00007fb5820fcced in signal_emit_unlocked_R (node=<optimized out>, detail=789, instance=<optimized out>, emission_return=0x0, instance_and_params=0x7fff5c1988d0) at /build/buildd/glib2.0-2.32.4/./gobject/gsignal.c:3685
  [Error: /build/buildd/glib2.0-2.32.4/./gobject/gsignal.c was not found in source tree]
#3  0x00007fb5821050b0 in g_signal_emit_valist (instance=<error reading variable: Cannot access memory at address 0x2fffffe4d>, signal_id=<optimized out>, detail=<error reading variable: Cannot access memory at address 0x2fffffe41>, var_args=<optimized out>) at /build/buildd/glib2.0-2.32.4/./gobject/gsignal.c:3330
  [Error: /build/buildd/glib2.0-2.32.4/./gobject/gsignal.c was not found in source tree]