#0  0x00007fce16a1f4bf in ?? () from /tmp/apport_sandbox_qxC8y5/usr/lib/x86_64-linux-gnu/libcups.so.2
No symbol table info available.
#1  0x000055b3707d9803 in process_new_notifications (user_data=0x55b372629070) at gsd-print-notifications-manager.c:916
        manager = 0x55b372629070
        attr = <optimized out>
        notify_subscribed_event = 0x0
        printer_name = 0x0
        notify_text = 0x0
        notify_printer_uri = 0x0
        job_state_reasons = 0x0
        job_name = 0x0
        attr_name = <optimized out>
        printer_is_accepting_jobs = 0
        printer_state_reasons = 0x0
        reasons = <optimized out>
        notify_job_id = 0
        request = 0x55b37263e190
        response = <optimized out>
        printer_state = -1
        job_state = -1
        job_impressions_completed = -1
        notify_sequence_number = -1
        i = <optimized out>
#2  0x00007fce164df864 in emit_signal_instance_in_idle_cb (data=0x7fce0001b4e0) at ../../../../gio/gdbusconnection.c:3720
        signal_instance = 0x7fce0001b4e0
        parameters = 0x7fce0000f520
        has_subscription = 1
#3  0x00007fce15f09e25 in g_main_dispatch (context=0x55b3726279d0) at ../../../../glib/gmain.c:3148
        dispatch = 0x7fce15f06760 <g_idle_dispatch>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x7fce0001b4e0
        callback = 0x7fce164df7f0 <emit_signal_instance_in_idle_cb>
        cb_funcs = 0x7fce161d1280 <g_source_callback_funcs>
        cb_data = 0x7fce00008840
        need_destroy = <optimized out>
        source = 0x7fce00014d90
        current = 0x55b3726406a0
        i = 0
        current = <optimized out>
        i = <optimized out>
        source = <optimized out>
        _g_boolean_var_ = <optimized out>
        was_in_call = <optimized out>
        user_data = <optimized out>
        callback = <optimized out>
        cb_funcs = <optimized out>
        cb_data = <optimized out>
        need_destroy = <optimized out>
        dispatch = <optimized out>
        prev_source = <optimized out>
        _g_boolean_var_ = <optimized out>
#4  g_main_context_dispatch (context=context@entry=0x55b3726279d0) at ../../../../glib/gmain.c:3813
No locals.
#5  0x00007fce15f0a1f0 in g_main_context_iterate (context=0x55b3726279d0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3886
        max_priority = 2147483647
        timeout = 3499914
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = 1
        fds = 0x55b37261d6e0
#6  0x00007fce15f0a502 in g_main_loop_run (loop=0x55b37260aa70) at ../../../../glib/gmain.c:4082
        self = <optimized out>
        __func__ = "g_main_loop_run"
#7  0x000055b3707d7905 in main (argc=<optimized out>, argv=<optimized out>) at ../../plugins/common/daemon-skeleton.h:209
        error = 0x0
        context = <optimized out>
        loop = 0x55b37260aa70