.
Thread 4 (Thread 1531):
#0  0x00007fa15c727003 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = 18446744073709551100
        oldtype = 0
        result = <value optimized out>
#1  0x00007fa15b922170 in g_main_context_poll (context=0x252bec0, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.0/glib/gmain.c:3404
        poll_func = 0x7fa15b9320a0 <g_poll>
#2  g_main_context_iterate (context=0x252bec0, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.0/glib/gmain.c:3086
        max_priority = 2147483647
        timeout = -1
        some_ready = <value optimized out>
        nfds = 1
        allocated_nfds = <value optimized out>
        fds = 0x7fa140000920
#3  0x00007fa15b922a4a in g_main_loop_run (loop=0x7fa140000900) at /build/buildd/glib2.0-2.28.0/glib/gmain.c:3299
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007fa147e9f66b in dconf_context_thread (data=0x252bec0) at dconfcontext.c:11
        context = 0x252bec0
        loop = <value optimized out>
        __PRETTY_FUNCTION__ = "dconf_context_thread"
#5  0x00007fa15b949314 in g_thread_create_proxy (data=0x2534220) at /build/buildd/glib2.0-2.28.0/glib/gthread.c:1897
        thread = 0x2534220
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#6  0x00007fa15d11ad8c in start_thread (arg=0x7fa144939700) at pthread_create.c:304
        pd = 0x7fa144939700
        now = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140330616985344, 1220744009634107841, 140734091269888, 140330616986048, 0, 3, -1174739034865577535, -1174790695768469055}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <value optimized out>
        sp = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007fa15c73417d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (Thread 16063):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:216
No locals.
#1  0x00007fa15aa40382 in g_cond_timed_wait_posix_impl (cond=<value optimized out>, entered_mutex=<value optimized out>, abs_time=<value optimized out>) at /build/buildd/glib2.0-2.28.0/gthread/gthread-posix.c:242
        result = <value optimized out>
        end_time = {tv_sec = 1298147230, tv_nsec = 466149000}
        timed_out = <value optimized out>
        __PRETTY_FUNCTION__ = "g_cond_timed_wait_posix_impl"
#2  0x00007fa15b8f727f in g_async_queue_pop_intern_unlocked (queue=0x1d42210, try=0, end_time=0x7fa139b0ddf0) at /build/buildd/glib2.0-2.28.0/glib/gasyncqueue.c:423
        retval = <value optimized out>
        __PRETTY_FUNCTION__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007fa15b94ba81 in g_thread_pool_wait_for_new_task (data=<value optimized out>) at /build/buildd/glib2.0-2.28.0/glib/gthreadpool.c:274
        end_time = {tv_sec = 1298147230, tv_usec = 466149}
        task = <value optimized out>
#4  g_thread_pool_thread_proxy (data=<value optimized out>) at /build/buildd/glib2.0-2.28.0/glib/gthreadpool.c:308
        task = 0x3901c00
        pool = 0x2593ea0
#5  0x00007fa15b949314 in g_thread_create_proxy (data=0x40a4ab0) at /build/buildd/glib2.0-2.28.0/glib/gthread.c:1897
        thread = 0x40a4ab0
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#6  0x00007fa15d11ad8c in start_thread (arg=0x7fa139b0e700) at pthread_create.c:304
        pd = 0x7fa139b0e700
        now = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140330434356992, 1220744009634107841, 140734091268528, 140330434357696, 0, 3, -1174727754670845503, -1174790695768469055}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <value optimized out>
        sp = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007fa15c73417d 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 1445):
#0  0x00007fa15c727003 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = 18446744073709551100
        oldtype = 0
        result = <value optimized out>
#1  0x00007fa15b922170 in g_main_context_poll (context=0x186bb90, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.0/glib/gmain.c:3404
        poll_func = 0x7fa15b9320a0 <g_poll>
#2  g_main_context_iterate (context=0x186bb90, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.0/glib/gmain.c:3086
        max_priority = 2147483647
        timeout = -1
        some_ready = <value optimized out>
        nfds = 3
        allocated_nfds = <value optimized out>
        fds = 0x186bea0
#3  0x00007fa15b922a4a in g_main_loop_run (loop=0x186bb70) at /build/buildd/glib2.0-2.28.0/glib/gmain.c:3299
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007fa15908bb34 in gdbus_shared_thread_func (data=<value optimized out>) at /build/buildd/glib2.0-2.28.0/gio/gdbusprivate.c:276
No locals.
#5  0x00007fa15b949314 in g_thread_create_proxy (data=0x186bc70) at /build/buildd/glib2.0-2.28.0/glib/gthread.c:1897
        thread = 0x186bc70
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#6  0x00007fa15d11ad8c in start_thread (arg=0x7fa158930700) at pthread_create.c:304
        pd = 0x7fa158930700
        now = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140330952492800, 1220744009634107841, 140734091271616, 140330952493504, 0, 3, -1174800615569796671, -1174790695768469055}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <value optimized out>
        sp = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007fa15c73417d 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 1441):
#0  0x00007fa1503bd1f6 in IconTexture::~IconTexture() () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#1  0x00007fa1503bd269 in IconTexture::~IconTexture() () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#2  0x00007fa14f64222b in nux::Object::Destroy() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#3  0x00007fa14f64241e in nux::Object::UnReference() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#4  0x00007fa1500843cd in nux::Layout::~Layout() () from /usr/lib/libnux-0.9.so.0
No symbol table info available.
#5  0x00007fa1500ed9b9 in nux::VLayout::~VLayout() () from /usr/lib/libnux-0.9.so.0
No symbol table info available.
#6  0x00007fa14f64222b in nux::Object::Destroy() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#7  0x00007fa14f64241e in nux::Object::UnReference() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#8  0x00007fa15007f0a9 in nux::View::RemoveLayout() () from /usr/lib/libnux-0.9.so.0
No symbol table info available.
#9  0x00007fa15007f31f in nux::View::~View() () from /usr/lib/libnux-0.9.so.0
No symbol table info available.
#10 0x00007fa1503f6171 in PlacesSimpleTile::~PlacesSimpleTile() () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#11 0x00007fa1503f6209 in PlacesSimpleTile::~PlacesSimpleTile() () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#12 0x00007fa14f64222b in nux::Object::Destroy() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#13 0x00007fa14f64241e in nux::Object::UnReference() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#14 0x00007fa1500843cd in nux::Layout::~Layout() () from /usr/lib/libnux-0.9.so.0
No symbol table info available.
#15 0x00007fa150071999 in nux::GridHLayout::~GridHLayout() () from /usr/lib/libnux-0.9.so.0
No symbol table info available.
#16 0x00007fa14f64222b in nux::Object::Destroy() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#17 0x00007fa14f64241e in nux::Object::UnReference() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#18 0x00007fa1500834dc in nux::Layout::RemoveChildObject(nux::Area*) () from /usr/lib/libnux-0.9.so.0
No symbol table info available.
#19 0x00007fa1503f09e5 in PlacesGroup::~PlacesGroup() () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#20 0x00007fa1503f0a99 in PlacesGroup::~PlacesGroup() () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#21 0x00007fa14f64222b in nux::Object::Destroy() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#22 0x00007fa14f64241e in nux::Object::UnReference() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#23 0x00007fa1503f245a in PlacesResultsController::Clear() () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#24 0x00007fa1503f93c9 in PlacesView::SetActiveEntry(PlaceEntry*, unsigned int, char const*, bool) () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#25 0x00007fa150417789 in ?? () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#26 0x00007fa15b921c1d in g_main_dispatch (context=0x184b700) at /build/buildd/glib2.0-2.28.0/glib/gmain.c:2440
        dispatch = 0x7fa15b91d520 <g_idle_dispatch>
        was_in_call = 0
        user_data = 0x2535d40
        callback = 0x7fa1504176c0
        cb_funcs = 0x7fa15bbcc630
        cb_data = 0x3ea6a50
        current_source_link = {data = 0x4133600, next = 0x0}
        need_destroy = <value optimized out>
        source = 0x4133600
        current = 0x186c9a0
        i = <value optimized out>
#27 g_main_context_dispatch (context=0x184b700) at /build/buildd/glib2.0-2.28.0/glib/gmain.c:3013
No locals.
#28 0x00007fa15b922408 in g_main_context_iterate (context=0x184b700, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.0/glib/gmain.c:3091
        max_priority = 200
        timeout = 0
        some_ready = 1
        nfds = 18
        allocated_nfds = <value optimized out>
        fds = <value optimized out>
#29 0x00007fa15b922a4a in g_main_loop_run (loop=0x184b990) at /build/buildd/glib2.0-2.28.0/glib/gmain.c:3299
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#30 0x0000000000429dca in CompScreen::eventLoop() ()
No symbol table info available.
#31 0x0000000000422e80 in main ()
No symbol table info available.