#0  0x00007f8cc0d5762a in g_mutex_get_impl (mutex=0x24970ea702) at /build/buildd/glib2.0-2.40.0/./glib/gthread-posix.c:120
        impl = <optimized out>
#1  0x00007f8cc0d57989 in g_mutex_lock (mutex=mutex@entry=0x24970ea702) at /build/buildd/glib2.0-2.40.0/./glib/gthread-posix.c:209
        _g_boolean_var_ = <optimized out>
        status = <optimized out>
#2  0x00007f8cc0d1472f in g_source_ref (source=0x7f8ca80242d0) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:1942
        context = 0x24970ea702
        __FUNCTION__ = "g_source_ref"
#3  0x000000000041560e in ?? ()
No symbol table info available.
#4  0x00007f8cc0fe55e7 in _g_closure_invoke_va (closure=0x7f8ca801c300, return_value=0x0, instance=0x7f8ca4010590, args=0x7f8cade068f8, n_params=0, param_types=0x0) at /build/buildd/glib2.0-2.40.0/./gobject/gclosure.c:831
        marshal = 0x7f8cc0fe7140 <g_cclosure_marshal_VOID__VOIDv>
        marshal_data = 0x0
        in_marshal = 0
        real_closure = 0x7f8ca801c2e0
        __FUNCTION__ = "_g_closure_invoke_va"
#5  0x00007f8cc0ffe088 in g_signal_emit_valist (instance=0x7f8ca4010590, signal_id=<optimized out>, detail=0, var_args=var_args@entry=0x7f8cade068f8) at /build/buildd/glib2.0-2.40.0/./gobject/gsignal.c:3215
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        accumulator = 0x0
        emission = {next = 0x0, instance = 0x7f8ca4010590, ihint = {signal_id = 4, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 140242090786256}
        signal_id = <optimized out>
        instance_type = <optimized out>
        emission_return = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        rtype = 4
        static_scope = 0
        fastpath_handler = <optimized out>
        closure = 0x7f8ca801c300
        run_type = <optimized out>
        l = <optimized out>
        fastpath = <optimized out>
        instance_and_params = <optimized out>
        signal_return_type = <optimized out>
        param_values = <optimized out>
        i = <optimized out>
        n_params = <optimized out>
        __FUNCTION__ = "g_signal_emit_valist"
#6  0x00007f8cc0ffece2 in g_signal_emit (instance=instance@entry=0x7f8ca4010590, signal_id=<optimized out>, detail=detail@entry=0) at /build/buildd/glib2.0-2.40.0/./gobject/gsignal.c:3363
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7f8cade069d0, reg_save_area = 0x7f8cade06910}}
#7  0x00007f8cc125ece5 in g_cancellable_cancel (cancellable=0x7f8ca4010590) at /build/buildd/glib2.0-2.40.0/./gio/gcancellable.c:499
        priv = 0x7f8ca4010580
#8  0x00000000004159d3 in ?? ()
No symbol table info available.
#9  0x00000000004100f1 in ?? ()
No symbol table info available.
#10 0x00000000004102d0 in ?? ()
No symbol table info available.
#11 0x0000000000411988 in ?? ()
No symbol table info available.
#12 0x000000000041382c in ?? ()
No symbol table info available.
#13 0x00007f8cc12844a6 in io_job_thread (task=<optimized out>, source_object=<optimized out>, task_data=0x1274ec0, cancellable=<optimized out>) at /build/buildd/glib2.0-2.40.0/./gio/gioscheduler.c:85
        job = 0x1274ec0
        result = <optimized out>
#14 0x00007f8cc12a6ba5 in g_task_thread_pool_thread (thread_data=0x1279390, pool_data=<optimized out>) at /build/buildd/glib2.0-2.40.0/./gio/gtask.c:1213
        task = 0x1279390
#15 0x00007f8cc0d3b89c in g_thread_pool_thread_proxy (data=<optimized out>) at /build/buildd/glib2.0-2.40.0/./glib/gthreadpool.c:307
        task = 0x1279390
        pool = 0x1276ac0
#16 0x00007f8cc0d3af15 in g_thread_proxy (data=0x1270450) at /build/buildd/glib2.0-2.40.0/./glib/gthread.c:764
        thread = 0x1270450
#17 0x00007f8cc0ab7182 in start_thread (arg=0x7f8cade07700) at pthread_create.c:312
        __res = <optimized out>
        pd = 0x7f8cade07700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140242189317888, -8505664524303441871, 0, 0, 140242189318592, 140242189317888, 8569387944157143089, 8569310472457314353}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#18 0x00007f8cc07e430d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.