#0  g_type_check_instance (type_instance=0x18cfdc0) at /build/buildd/glib2.0-2.31.16/./gobject/gtype.c:4072
        node = 0x0
#1  0x00007fe5c34fba36 in g_signal_emit_valist (instance=0x18cfdc0, signal_id=224, detail=0, var_args=0x7fff0feccc58) at /build/buildd/glib2.0-2.31.16/./gobject/gsignal.c:2966
        _g_boolean_var_ = <optimized out>
        instance_and_params = <optimized out>
        signal_return_type = <optimized out>
        param_values = <optimized out>
        node = 0x7fe5c34e57a0
        i = <optimized out>
        n_params = <optimized out>
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#2  0x00007fe5c34fc1d2 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.31.16/./gobject/gsignal.c:3090
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fff0feccd30, reg_save_area = 0x7fff0feccc70}}
#3  0x00007fe5c01f30a7 in ?? ()
No symbol table info available.
#4  0x00007fe5c44ebd83 in ?? () from /tmp/tmp05lHgY/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x0000000000db0430 in ?? ()
No symbol table info available.
#6  0x0000000001d08ad0 in ?? ()
No symbol table info available.
#7  0x0000000000000000 in ?? ()
No symbol table info available.