.
Thread 4 (Thread 0x7f1e466f7700 (LWP 3067)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:215
No locals.
#1  0x00007f1e7152d545 in g_cond_wait_until (cond=cond@entry=0x7f1e750d89a8, mutex=mutex@entry=0x7f1e750d89a0, end_time=end_time@entry=803475775) at /build/buildd/glib2.0-2.33.6/./glib/gthread-posix.c:855
        ts = {tv_sec = 803, tv_nsec = 475775000}
        status = <optimized out>
#2  0x00007f1e714c7461 in g_async_queue_pop_intern_unlocked (queue=queue@entry=0x7f1e750d89a0, wait=wait@entry=1, end_time=end_time@entry=803475775) at /build/buildd/glib2.0-2.33.6/./glib/gasyncqueue.c:424
        retval = <optimized out>
        __PRETTY_FUNCTION__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007f1e714c7aaa in g_async_queue_timeout_pop (queue=0x7f1e750d89a0, timeout=timeout@entry=15000000) at /build/buildd/glib2.0-2.33.6/./glib/gasyncqueue.c:545
        end_time = 803475775
        retval = <optimized out>
#4  0x00007f1e71514572 in g_thread_pool_wait_for_new_pool () at /build/buildd/glib2.0-2.33.6/./glib/gthreadpool.c:169
        pool = <optimized out>
        local_max_idle_time = 15000
        local_wakeup_thread_serial = <optimized out>
        local_max_unused_threads = 2
        last_wakeup_thread_serial = 0
        have_relayed_thread_marker = 0
#5  g_thread_pool_thread_proxy (data=<optimized out>) at /build/buildd/glib2.0-2.33.6/./glib/gthreadpool.c:366
        free_pool = <optimized out>
        task = 0x2
        pool = <optimized out>
#6  0x00007f1e71513db5 in g_thread_proxy (data=0x7f1e7520f000) at /build/buildd/glib2.0-2.33.6/./glib/gthread.c:801
        thread = 0x7f1e7520f000
#7  0x00007f1e70f59e9a in start_thread (arg=0x7f1e466f7700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f1e466f7700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 7964245254040304514, 140735349009856, 139768007457216, 0, 3, -8018058792744141950, -8018009086590600318}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#8  0x00007f1e70c874bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#9  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (Thread 0x7f1e6abc8700 (LWP 3024)):
#0  0x00007f1e70c7bb03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007f1e714f0f34 in g_main_context_poll (n_fds=5, fds=0x7f1e64002f30, timeout=-1, context=0x7f1e74e647a0, priority=<optimized out>) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3560
        poll_func = 0x7f1e714fedb0 <g_poll>
#2  g_main_context_iterate (context=0x7f1e74e647a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3261
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 5
        allocated_nfds = <optimized out>
        fds = 0x7f1e64002f30
#3  0x00007f1e714f1392 in g_main_loop_run (loop=0x7f1e74e64730) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3460
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007f1e71ac41d6 in gdbus_shared_thread_func (user_data=0x7f1e74e64770) at /build/buildd/glib2.0-2.33.6/./gio/gdbusprivate.c:277
        data = 0x7f1e74e64770
#5  0x00007f1e71513db5 in g_thread_proxy (data=0x7f1e74eab0a0) at /build/buildd/glib2.0-2.33.6/./glib/gthread.c:801
        thread = 0x7f1e74eab0a0
#6  0x00007f1e70f59e9a in start_thread (arg=0x7f1e6abc8700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f1e6abc8700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 7964245254040304514, 140735349010624, 139768616487360, 0, 3, -8017960240961438846, -8018009086590600318}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f1e70c874bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7f1e68cf0700 (LWP 3025)):
#0  0x00007f1e70c7bb03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007f1e714f0f34 in g_main_context_poll (n_fds=1, fds=0x7f1e5c0010c0, timeout=25000, context=0x7f1e74f572d0, priority=<optimized out>) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3560
        poll_func = 0x7f1e714fedb0 <g_poll>
#2  g_main_context_iterate (context=context@entry=0x7f1e74f572d0, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3261
        max_priority = 2147483647
        timeout = 25000
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x7f1e5c0010c0
#3  0x00007f1e714f1054 in g_main_context_iteration (context=context@entry=0x7f1e74f572d0, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3327
        retval = <optimized out>
#4  0x00007f1e68cf735d in dconf_gdbus_worker_thread (user_data=0x7f1e74f572d0) at dconf-gdbus-thread.c:81
        context = 0x7f1e74f572d0
#5  0x00007f1e71513db5 in g_thread_proxy (data=0x7f1e74f54630) at /build/buildd/glib2.0-2.33.6/./glib/gthread.c:801
        thread = 0x7f1e74f54630
#6  0x00007f1e70f59e9a in start_thread (arg=0x7f1e68cf0700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f1e68cf0700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 7964245254040304514, 140735349011424, 139768584145344, 0, 3, -8017956268116690046, -8018009086590600318}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f1e70c874bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7f1e7362e940 (LWP 3005)):
#0  0x00007f1e4690d967 in tz_query_answered (object=0x7f1e74f56c00, res=<optimized out>, self=self@entry=0x7f1e74e77310) at datetime-prefs.c:272
        _pp = 0xaaaaaaaaaaaaab02
        _p = <optimized out>
        error = 0x7f1e752a5b70
        answers = 0x0
        timezone = 0x7f1e74ea2c80 ""
#1  0x00007f1e71a6103e in g_simple_async_result_complete (simple=0x7f1e75241840) at /build/buildd/glib2.0-2.33.6/./gio/gsimpleasyncresult.c:775
        current_source = <optimized out>
        current_context = <optimized out>
        __PRETTY_FUNCTION__ = "g_simple_async_result_complete"
#2  0x00007f1e71abfc73 in reply_cb (connection=<optimized out>, res=0x7f1e74eb72d0, user_data=user_data@entry=0x7f1e75241840) at /build/buildd/glib2.0-2.33.6/./gio/gdbusproxy.c:2632
        simple = 0x7f1e75241840
        value = <optimized out>
        error = 0x7f1e750e4520
        fd_list = 0x7f1e74ea2c80
#3  0x00007f1e71a6103e in g_simple_async_result_complete (simple=0x7f1e74eb72d0) at /build/buildd/glib2.0-2.33.6/./gio/gsimpleasyncresult.c:775
        current_source = <optimized out>
        current_context = <optimized out>
        __PRETTY_FUNCTION__ = "g_simple_async_result_complete"
#4  0x00007f1e71ab5dce in g_dbus_connection_call_done (source=0x7f1e74ea6c80, result=<optimized out>, user_data=user_data@entry=0x7f1e753d4830) at /build/buildd/glib2.0-2.33.6/./gio/gdbusconnection.c:5333
        simple = 0x7f1e74eb72d0
        connection = <optimized out>
        state = 0x7f1e753d4830
        error = 0x7f1e752a5b40
        reply = 0x0
#5  0x00007f1e71a6103e in g_simple_async_result_complete (simple=0x7f1e75105c10) at /build/buildd/glib2.0-2.33.6/./gio/gsimpleasyncresult.c:775
        current_source = <optimized out>
        current_context = <optimized out>
        __PRETTY_FUNCTION__ = "g_simple_async_result_complete"
#6  0x00007f1e71a6116c in complete_in_idle_cb (data=0x7f1e75105c10) at /build/buildd/glib2.0-2.33.6/./gio/gsimpleasyncresult.c:787
        simple = <optimized out>
#7  0x00007f1e714f0c65 in g_main_dispatch (context=0x7f1e74e6a000) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:2691
        dispatch = 0x7f1e714ee0e0 <g_idle_dispatch>
        was_in_call = 0
        user_data = 0x7f1e75105c10
        callback = 0x7f1e71a61150 <complete_in_idle_cb>
        cb_funcs = 0x7f1e7179d9a0
        cb_data = 0x7f1e74f18950
        current_source_link = {data = 0x7f1e7510fa30, next = 0x0}
        need_destroy = <optimized out>
        source = 0x7f1e7510fa30
        current = 0x7f1e74e65620
        i = <optimized out>
#8  g_main_context_dispatch (context=context@entry=0x7f1e74e6a000) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3195
No locals.
#9  0x00007f1e714f0f98 in g_main_context_iterate (context=context@entry=0x7f1e74e6a000, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3266
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = <optimized out>
        fds = 0x7f1e7510d4f0
#10 0x00007f1e714f1054 in g_main_context_iteration (context=0x7f1e74e6a000, context@entry=0x0, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3327
        retval = <optimized out>
#11 0x00007f1e71a9072c in g_application_run (application=0x7f1e74ea6380, argc=argc@entry=2, argv=argv@entry=0x7fff807c3ea8) at /build/buildd/glib2.0-2.33.6/./gio/gapplication.c:1607
        arguments = 0x7f1e75159ea0
        status = 0
        i = <optimized out>
        __PRETTY_FUNCTION__ = "g_application_run"
#12 0x00007f1e7366e86a in main (argc=2, argv=0x7fff807c3ea8) at control-center.c:207
        shell = <optimized out>
        application = 0x7f1e74ea6380
        status = <optimized out>