gdb -batch -n -ex 'set height 0' -ex bt -ex 'thread apply all bt full' --core /var/crash/1000/2044-1000-1000-6-1444219757-chianamo--usr-bin-gnome-shell.core /usr/bin/gnome-shell
[New LWP 2044]
[New LWP 2046]
[New LWP 2059]
[New LWP 2050]
[New LWP 2056]
[New LWP 2057]
[New LWP 2058]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/gnome-shell'.
Program terminated with signal SIGABRT, Aborted.
#0  0x00007f3bc4653107 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
56	../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
[Current thread is 1 (Thread 0x7f3bc7af9a80 (LWP 2044))]
#0  0x00007f3bc4653107 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1  0x00007f3bc46544e8 in __GI_abort () at abort.c:89
#2  0x00007f3bc4c53b05 in g_assertion_message (domain=domain@entry=0x7f3bc65e8970 "mutter", file=file@entry=0x7f3bc65eddad "ui/frames.c", line=line@entry=1057, func=func@entry=0x7f3bc65edc30 <__FUNCTION__.79490> "meta_frame_left_click_event", message=message@entry=0x5e56c70 "code should not be reached") at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gtestutils.c:2429
#3  0x00007f3bc4c53b9a in g_assertion_message_expr (domain=domain@entry=0x7f3bc65e8970 "mutter", file=file@entry=0x7f3bc65eddad "ui/frames.c", line=line@entry=1057, func=func@entry=0x7f3bc65edc30 <__FUNCTION__.79490> "meta_frame_left_click_event", expr=expr@entry=0x0) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gtestutils.c:2444
#4  0x00007f3bc65b5b22 in meta_frame_left_click_event (frame=0x742ef20, event=event@entry=0x6283ad0) at ui/frames.c:1057
#5  0x00007f3bc65b6dbf in meta_ui_frame_handle_event (event=0x6283ad0, frame=<optimized out>) at ui/frames.c:1107
#6  0x00007f3bc65b6dbf in meta_ui_frame_handle_event (frame=<optimized out>, event=event@entry=0x6283ad0) at ui/frames.c:1580
#7  0x00007f3bc65b28e6 in meta_window_handle_ungrabbed_event (window=window@entry=0x5967820 [MetaWindowX11], event=event@entry=0x6283ad0) at core/window.c:7771
#8  0x00007f3bc6595a1e in event_callback (event=0x6283ad0, display=0x353f030 [MetaDisplay]) at core/events.c:278
#9  0x00007f3bc6595a1e in event_callback (event=0x6283ad0, data=0x353f030) at core/events.c:343
#10 0x00007f3bc5961c4d in _clutter_event_process_filters (event=event@entry=0x6283ad0) at clutter-event.c:1802
#11 0x00007f3bc59739bb in _clutter_process_event (device=0x3018010 [ClutterInputDeviceXI2], event=0x6283ad0) at clutter-main.c:2022
#12 0x00007f3bc59739bb in _clutter_process_event (context=0x18db800, event=0x6283ad0, stage=<optimized out>) at clutter-main.c:2379
#13 0x00007f3bc59739bb in _clutter_process_event (event=event@entry=0x6283ad0) at clutter-main.c:2539
#14 0x00007f3bc598a189 in _clutter_stage_process_queued_events (stage=0x342c4c0 [MetaStage]) at clutter-stage.c:1031
#15 0x00007f3bc5975c39 in clutter_clock_dispatch (master_clock=0x3809000 [ClutterMasterClockDefault], stages=<optimized out>) at clutter-master-clock-default.c:364
#16 0x00007f3bc5975c39 in clutter_clock_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at clutter-master-clock-default.c:561
#17 0x00007f3bc4c2dfe7 in g_main_context_dispatch (context=0x18d9ec0) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:3154
#18 0x00007f3bc4c2dfe7 in g_main_context_dispatch (context=context@entry=0x18d9ec0) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:3769
#19 0x00007f3bc4c2e240 in g_main_context_iterate (context=0x18d9ec0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:3840
#20 0x00007f3bc4c2e562 in g_main_loop_run (loop=0x1917560) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:4034
#21 0x00007f3bc659c596 in meta_run () at core/main.c:437
#22 0x000000000040208d in main (argc=1, argv=0x7ffd26a77588) at main.c:462

Thread 7 (Thread 0x7f3ba29ea700 (LWP 2058)):
#0  0x00007f3bc49d308f in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3bb6256d00 in PR_WaitCondVar (cvar=0x35a2840, timeout=4294967295) at ptsynch.c:396
        rv = <optimized out>
        thred = 0x35a28e0
#2  0x00007f3bc048ef0e in js::GCHelperThread::threadLoop() (this=0x36631f8) at /tmp/buildd/mozjs24-24.2.0/js/src/jsgc.cpp:2266
        lock = {runtime = 0x3662480}
#3  0x00007f3bb625c668 in _pt_root (arg=0x35a28e0) at ptthread.c:212
        rv = <optimized out>
        thred = 0x35a28e0
        detached = 0
        id = 139894108104448
        tid = 2058
#4  0x00007f3bc49cf0a4 in start_thread (arg=0x7f3ba29ea700) at pthread_create.c:309
        __res = <optimized out>
        pd = 0x7f3ba29ea700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139894108104448, 5604914518146686749, 0, 139894731100256, 56240352, 139894108104448, -5494412213490802915, -5494636500223385827}, 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"
#5  0x00007f3bc470406d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7f3ba31eb700 (LWP 2057)):
#0  0x00007f3bc46fb52d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3bc0aaa831 in poll_func (__timeout=-1, __nfds=3, __fds=0x7f3b8c006c50) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
        mutex = <optimized out>
#2  0x00007f3bc0aaa831 in poll_func (ufds=0x7f3b8c006c50, nfds=3, timeout=-1, userdata=0x3568d30) at pulse/thread-mainloop.c:69
        mutex = <optimized out>
#3  0x00007f3bc0a9be51 in pa_mainloop_poll (m=m@entry=0x35df4b0) at pulse/mainloop.c:844
        __func__ = "pa_mainloop_poll"
        __PRETTY_FUNCTION__ = "pa_mainloop_poll"
#4  0x00007f3bc0a9c4ee in pa_mainloop_iterate (m=0x35df4b0, block=<optimized out>, retval=0x0) at pulse/mainloop.c:926
        r = 0
#5  0x00007f3bc0a9c5a0 in pa_mainloop_run (m=0x35df4b0, retval=retval@entry=0x0) at pulse/mainloop.c:944
        r = <optimized out>
#6  0x00007f3bc0aaa7c6 in thread (userdata=0x35aab20) at pulse/thread-mainloop.c:88
        m = 0x35aab20
        mask = {__val = {18446744067267100671, 18446744073709551615 <repeats 15 times>}}
#7  0x00007f3bb6adaff8 in internal_thread_func (userdata=0x350ecb0) at pulsecore/thread-posix.c:81
        t = 0x350ecb0
#8  0x00007f3bc49cf0a4 in start_thread (arg=0x7f3ba31eb700) at pthread_create.c:309
        __res = <optimized out>
        pd = 0x7f3ba31eb700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139894116497152, 5604914518146686749, 0, 139894731100256, 50396640, 139894116497152, -5494411114516046051, -5494636500223385827}, 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"
#9  0x00007f3bc470406d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7f3ba3fff700 (LWP 2056)):
#0  0x00007f3bc46fb52d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3bc4c2e1dc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f3b980010c0, timeout=<optimized out>, context=0x3461410) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:4135
        poll_func = 0x7f3bc4c3d0d0 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f3b980010c0
#2  0x00007f3bc4c2e1dc in g_main_context_iterate (context=context@entry=0x3461410, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:3835
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f3b980010c0
#3  0x00007f3bc4c2e2ec in g_main_context_iteration (context=0x3461410, may_block=1) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:3901
        retval = <optimized out>
#4  0x00007f3ba820728d in  () at /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
#5  0x00007f3bc4c54955 in g_thread_proxy (data=0x345e8a0) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gthread.c:778
        thread = <optimized out>
#6  0x00007f3bc49cf0a4 in start_thread (arg=0x7f3ba3fff700) at pthread_create.c:309
        __res = <optimized out>
        pd = 0x7f3ba3fff700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139894131259136, 5604914518146686749, 0, 139894731100256, 139894681061632, 139894131259136, -5494409201108115683, -5494636500223385827}, 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"
#7  0x00007f3bc470406d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7f3ba940e700 (LWP 2050)):
#0  0x00007f3bc46fb52d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3bc4c2e1dc in g_main_context_iterate (priority=2147483647, n_fds=3, fds=0x7f3ba40010c0, timeout=<optimized out>, context=0x344cd10) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:4135
        poll_func = 0x7f3bc4c3d0d0 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = 3
        fds = 0x7f3ba40010c0
#2  0x00007f3bc4c2e1dc in g_main_context_iterate (context=0x344cd10, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:3835
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = 3
        fds = 0x7f3ba40010c0
#3  0x00007f3bc4c2e562 in g_main_loop_run (loop=0x190d040) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:4034
        __func__ = "g_main_loop_run"
#4  0x00007f3bc54334c6 in gdbus_shared_thread_func (user_data=0x344cce0) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./gio/gdbusprivate.c:246
        data = 0x344cce0
#5  0x00007f3bc4c54955 in g_thread_proxy (data=0x18da190) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gthread.c:778
        thread = <optimized out>
#6  0x00007f3bc49cf0a4 in start_thread (arg=0x7f3ba940e700) at pthread_create.c:309
        __res = <optimized out>
        pd = 0x7f3ba940e700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139894219400960, 5604914518146686749, 0, 139894731100256, 139894681061632, 139894219400960, -5494397526850134243, -5494636500223385827}, 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"
#7  0x00007f3bc470406d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7f3ba21e9700 (LWP 2059)):
#0  0x00007f3bc49d308f in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3bb6256d00 in PR_WaitCondVar (cvar=0x35b93e0, timeout=4294967295) at ptsynch.c:396
        rv = <optimized out>
        thred = 0x3577a50
#2  0x00007f3bc05065ce in js::SourceCompressorThread::compressorThread(void*) (this=0x36632d8) at /tmp/buildd/mozjs24-24.2.0/js/src/jsscript.cpp:1094
#3  0x00007f3bc05065ce in js::SourceCompressorThread::compressorThread(void*) (arg=0x36632d8) at /tmp/buildd/mozjs24-24.2.0/js/src/jsscript.cpp:965
#4  0x00007f3bb625c668 in _pt_root (arg=0x3577a50) at ptthread.c:212
        rv = <optimized out>
        thred = 0x3577a50
        detached = 0
        id = 139894099711744
        tid = 2059
#5  0x00007f3bc49cf0a4 in start_thread (arg=0x7f3ba21e9700) at pthread_create.c:309
        __res = <optimized out>
        pd = 0x7f3ba21e9700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139894099711744, 5604914518146686749, 0, 139894731100256, 56064592, 139894099711744, -5494413312465559779, -5494636500223385827}, 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"
#6  0x00007f3bc470406d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f3bb0876700 (LWP 2046)):
#0  0x00007f3bc46fb52d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3bc4c2e1dc in g_main_context_iterate (priority=2147483647, n_fds=2, fds=0x7f3bac0008e0, timeout=<optimized out>, context=0x18d9e00) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:4135
        poll_func = 0x7f3bc4c3d0d0 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x7f3bac0008e0
#2  0x00007f3bc4c2e1dc in g_main_context_iterate (context=context@entry=0x18d9e00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:3835
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x7f3bac0008e0
#3  0x00007f3bc4c2e2ec in g_main_context_iteration (context=0x18d9e00, may_block=may_block@entry=1) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:3901
        retval = <optimized out>
#4  0x00007f3bc4c2e329 in glib_worker_main (data=<optimized out>) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:5672
#5  0x00007f3bc4c54955 in g_thread_proxy (data=0x18da000) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gthread.c:778
        thread = <optimized out>
#6  0x00007f3bc49cf0a4 in start_thread (arg=0x7f3bb0876700) at pthread_create.c:309
        __res = <optimized out>
        pd = 0x7f3bb0876700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139894341461760, 5604914518146686749, 0, 139894731100256, 139894681061632, 139894341461760, -5494452017100218595, -5494636500223385827}, 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"
#7  0x00007f3bc470406d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f3bc7af9a80 (LWP 2044)):
#0  0x00007f3bc4653107 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        resultvar = 0
        pid = 2044
        selftid = 2044
#1  0x00007f3bc46544e8 in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7f3bc65edc30 <__FUNCTION__.79490>, sa_sigaction = 0x7f3bc65edc30 <__FUNCTION__.79490>}, sa_mask = {__val = {93747232, 86, 139894728924695, 140724603453445, 0, 0, 139894674574632, 97224928, 86, 139894683804384, 139894728950581, 0, 0, 139894678361672, 4294967295, 0}}, sa_flags = 0, sa_restorer = 0x5cb88e0}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f3bc4c53b05 in g_assertion_message (domain=domain@entry=0x7f3bc65e8970 "mutter", file=file@entry=0x7f3bc65eddad "ui/frames.c", line=line@entry=1057, func=func@entry=0x7f3bc65edc30 <__FUNCTION__.79490> "meta_frame_left_click_event", message=message@entry=0x5e56c70 "code should not be reached") at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gtestutils.c:2429
        lstr = "1057\000\000\000\000\200\240i\304;\177\000\000\000\000\000\000\000\000\000\000\033\000\000\000\000\000\000"
        s = 0x5cb88e0 ""
#3  0x00007f3bc4c53b9a in g_assertion_message_expr (domain=domain@entry=0x7f3bc65e8970 "mutter", file=file@entry=0x7f3bc65eddad "ui/frames.c", line=line@entry=1057, func=func@entry=0x7f3bc65edc30 <__FUNCTION__.79490> "meta_frame_left_click_event", expr=expr@entry=0x0) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gtestutils.c:2444
        s = 0x5e56c70 "code should not be reached"
#4  0x00007f3bc65b5b22 in meta_frame_left_click_event (frame=0x742ef20, event=event@entry=0x6283ad0) at ui/frames.c:1057
        display = 0x3481a00
        control = META_FRAME_CONTROL_NONE
        __FUNCTION__ = "meta_frame_left_click_event"
#5  0x00007f3bc65b6dbf in meta_ui_frame_handle_event (event=0x6283ad0, frame=<optimized out>) at ui/frames.c:1107
        control = <optimized out>
        display = <optimized out>
#6  0x00007f3bc65b6dbf in meta_ui_frame_handle_event (frame=<optimized out>, event=event@entry=0x6283ad0) at ui/frames.c:1580
#7  0x00007f3bc65b28e6 in meta_window_handle_ungrabbed_event (window=window@entry=0x5967820 [MetaWindowX11], event=event@entry=0x6283ad0) at core/window.c:7771
        display = 0x353f030 [MetaDisplay]
        unmodified = <optimized out>
        is_window_grab = <optimized out>
        grab_mods = <optimized out>
#8  0x00007f3bc6595a1e in event_callback (event=0x6283ad0, display=0x353f030 [MetaDisplay]) at core/events.c:278
        bypass_clutter = 1
        bypass_wayland = 0
        tracker = <optimized out>
        sequence = 0x0
        source = <optimized out>
        compositor = 0x0
        display = 0x353f030 [MetaDisplay]
#9  0x00007f3bc6595a1e in event_callback (event=0x6283ad0, data=0x353f030) at core/events.c:343
        display = 0x353f030 [MetaDisplay]
#10 0x00007f3bc5961c4d in _clutter_event_process_filters (event=event@entry=0x6283ad0) at clutter-event.c:1802
        event_filter = <optimized out>
        context = <optimized out>
        l = <optimized out>
Python Exception <class 'TypeError'> iter() returned non-iterator of type '_iterator': 
        next = 0x0
#11 0x00007f3bc59739bb in _clutter_process_event (device=0x3018010 [ClutterInputDeviceXI2], event=0x6283ad0) at clutter-main.c:2022
        context = 0x18db800
        actor = <optimized out>
        x = 1109.47131
        y = 1114.67004
        device = 0x3018010 [ClutterInputDeviceXI2]
        context = <optimized out>
        stage = <optimized out>
#12 0x00007f3bc59739bb in _clutter_process_event (context=0x18db800, event=0x6283ad0, stage=<optimized out>) at clutter-main.c:2379
        actor = <optimized out>
        x = 1109.47131
        y = 1114.67004
        device = 0x3018010 [ClutterInputDeviceXI2]
        context = <optimized out>
        stage = <optimized out>
#13 0x00007f3bc59739bb in _clutter_process_event (event=event@entry=0x6283ad0) at clutter-main.c:2539
        context = <optimized out>
        stage = <optimized out>
#14 0x00007f3bc598a189 in _clutter_stage_process_queued_events (stage=0x342c4c0 [MetaStage]) at clutter-stage.c:1031
        next_event = 0x0
        device = <optimized out>
        event = 0x6283ad0
        next_device = 0x0
        check_device = 0
        priv = 0x342bec0
Python Exception <class 'TypeError'> iter() returned non-iterator of type '_iterator': 
        events = 0x70dca00
Python Exception <class 'TypeError'> iter() returned non-iterator of type '_iterator': 
        l = 0x7070600
        __func__ = "_clutter_stage_process_queued_events"
#15 0x00007f3bc5975c39 in clutter_clock_dispatch (master_clock=0x3809000 [ClutterMasterClockDefault], stages=<optimized out>) at clutter-master-clock-default.c:364
Python Exception <class 'TypeError'> iter() returned non-iterator of type '_iterator': 
        l = 0x6cb1e50
        clock_source = <optimized out>
        master_clock = 0x3809000 [ClutterMasterClockDefault]
        stages_updated = 0
#16 0x00007f3bc5975c39 in clutter_clock_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at clutter-master-clock-default.c:561
        clock_source = <optimized out>
        master_clock = 0x3809000 [ClutterMasterClockDefault]
        stages_updated = 0
#17 0x00007f3bc4c2dfe7 in g_main_context_dispatch (context=0x18d9ec0) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:3154
        dispatch = 0x7f3bc5975b80 <clutter_clock_dispatch>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x0
        callback = 0x0
        cb_funcs = <optimized out>
        cb_data = <optimized out>
        need_destroy = <optimized out>
        source = 0x3849990
        current = 0x1f2d750
        i = 0
#18 0x00007f3bc4c2dfe7 in g_main_context_dispatch (context=context@entry=0x18d9ec0) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:3769
#19 0x00007f3bc4c2e240 in g_main_context_iterate (context=0x18d9ec0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:3840
        max_priority = 150
        timeout = 0
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = 14
        fds = 0x48c0f10
#20 0x00007f3bc4c2e562 in g_main_loop_run (loop=0x1917560) at /build/glib2.0-BMd9vh/glib2.0-2.46.0/./glib/gmain.c:4034
        __func__ = "g_main_loop_run"
#21 0x00007f3bc659c596 in meta_run () at core/main.c:437
#22 0x000000000040208d in main (argc=1, argv=0x7ffd26a77588) at main.c:462
        ctx = <optimized out>
        error = 0x0
        ecode = <optimized out>
        sender = 0x35b8f90 [TpDebugSender]
