.
Thread 5 (Thread 0x7f42a3fff700 (LWP 21464)):
#0  0x00007f42ab4539bf in poll () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f42ab6441ae in g_main_context_iterate.isra () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#2  0x00007f42ab644533 in g_main_loop_run () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#3  0x00007f42ab899cba in gdbus_shared_thread_func (user_data=0x55ce503bc740) at ../../../gio/gdbusprivate.c:279
        data = 0x55ce503bc740
#4  0x00007f42ab66d911 in g_thread_proxy () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#5  0x00007f42ab253609 in start_thread () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f42ab460153 in clone () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
.
Thread 4 (Thread 0x7f42a37fe700 (LWP 21465)):
#0  0x00007f42ab4539bf in poll () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f42ab6441ae in g_main_context_iterate.isra () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#2  0x00007f42ab6442e3 in g_main_context_iteration () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#3  0x00007f42a8b7299d in dconf_gdbus_worker_thread (user_data=0x55ce504046e0) at ../gdbus/dconf-gdbus-thread.c:82
        context = 0x55ce504046e0
#4  0x00007f42ab66d911 in g_thread_proxy () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#5  0x00007f42ab253609 in start_thread () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f42ab460153 in clone () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
.
Thread 3 (Thread 0x7f42a2ffd700 (LWP 21466)):
#0  0x00007f42ab45975d in syscall () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f42ab691586 in g_cond_wait_until () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#2  0x00007f42ab614561 in g_async_queue_pop_intern_unlocked () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#3  0x00007f42ab614b86 in g_async_queue_timeout_pop () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#4  0x00007f42ab66e259 in g_thread_pool_thread_proxy () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#5  0x00007f42ab66d911 in g_thread_proxy () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#6  0x00007f42ab253609 in start_thread () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#7  0x00007f42ab460153 in clone () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
.
Thread 2 (Thread 0x7f42a8b52700 (LWP 21463)):
#0  0x00007f42ab4539bf in poll () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f42ab6441ae in g_main_context_iterate.isra () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#2  0x00007f42ab6442e3 in g_main_context_iteration () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#3  0x00007f42ab644331 in glib_worker_main () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#4  0x00007f42ab66d911 in g_thread_proxy () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#5  0x00007f42ab253609 in start_thread () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f42ab460153 in clone () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
.
Thread 1 (Thread 0x7f42a91b7a80 (LWP 21462)):
#0  0x00007f42ab38418b in raise () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f42ab363859 in abort () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#2  0x00007f42ab60fb4f in _g_log_abort.cold () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#3  0x00007f42ab64b3b9 in g_logv () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#4  0x00007f42ab64b583 in g_log () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#5  0x00007f42ab5838df in plank_abstract_main_sig_handler (sig=<optimized out>) at Factories/AbstractMain.c:454
        _tmp0_ = <optimized out>
        _tmp0_ = <optimized out>
#6  _plank_abstract_main_sig_handler_sighandler_t (signal=<optimized out>) at Factories/AbstractMain.c:2202
No locals.
#7  <signal handler called>
No symbol table info available.
#8  0x00007f42ab1dd5e9 in ?? () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libpcre.so.3
No symbol table info available.
#9  0x00007f42ab1ebeb4 in ?? () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libpcre.so.3
No symbol table info available.
#10 0x00007f42ab1e00cc in ?? () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libpcre.so.3
No symbol table info available.
#11 0x00007f42ab1eb6bf in ?? () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libpcre.so.3
No symbol table info available.
#12 0x00007f42ab1ef849 in pcre_exec () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libpcre.so.3
No symbol table info available.
#13 0x00007f42ab657e0c in g_match_info_next () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#14 0x00007f42ab65974f in g_regex_match_full () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#15 0x00007f42ab6598ae in g_regex_match () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#16 0x00007f42ab59ebca in plank_logger_format_message (msg=0x55ce50572400 "Failed to fetch xid: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface \342\200\234org.ayatana.bamf.window\342\200\235 on object at path /org/ayatana/bamf/window/54525955") at Services/Logger.c:232
        _tmp2_ = <optimized out>
        result = 0x0
        _tmp0_ = 0
        _tmp1_ = <optimized out>
        _tmp13_ = 0x55ce50668650 ""
        __func__ = "plank_logger_format_message"
#17 0x00007f42ab59f166 in plank_logger_glib_log_func (d=<optimized out>, flags=<optimized out>, msg=<optimized out>) at Services/Logger.c:635
        domain = 0x55ce50668650 ""
        message = 0x55ce50572400 "Failed to fetch xid: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface \342\200\234org.ayatana.bamf.window\342\200\235 on object at path /org/ayatana/bamf/window/54525955"
        _tmp2_ = <optimized out>
        level = PLANK_LOG_LEVEL_WARN
        _tmp11_ = PLANK_LOG_LEVEL_WARN
        _tmp12_ = 0x55ce50572400 "Failed to fetch xid: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface \342\200\234org.ayatana.bamf.window\342\200\235 on object at path /org/ayatana/bamf/window/54525955"
        _tmp13_ = <optimized out>
        __func__ = "plank_logger_glib_log_func"
#18 0x00007f42ab64b39c in g_logv () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#19 0x00007f42ab64b583 in g_log () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#20 0x00007f42aad84099 in bamf_window_get_xid (self=0x55ce5041a880) at bamf-window.c:215
        priv = 0x55ce5041a810
        error = 0x55ce506fe230
        __func__ = "bamf_window_get_xid"
#21 0x00007f42aad8525b in _bamf_factory_view_for_path_type (factory=0x55ce50850e40, path=path@entry=0x55ce504c3ea0 "/org/ayatana/bamf/window/54525955", type=<optimized out>) at bamf-factory.c:457
        local_xid = <optimized out>
        views = <optimized out>
        view = 0x55ce5041a880
        vproxy = <optimized out>
        l = <optimized out>
        __func__ = "_bamf_factory_view_for_path_type"
        matched_view = 0x0
#22 0x00007f42aad8551c in _bamf_factory_view_for_path_type_str (factory=<optimized out>, path=path@entry=0x55ce504c3ea0 "/org/ayatana/bamf/window/54525955", type=type@entry=0x55ce50467d80 "window") at bamf-factory.c:321
        __func__ = "_bamf_factory_view_for_path_type_str"
        factory_type = <optimized out>
#23 0x00007f42aad7f6d0 in bamf_matcher_on_view_closed (proxy=<optimized out>, path=0x55ce504c3ea0 "/org/ayatana/bamf/window/54525955", type=0x55ce50467d80 "window", matcher=0x55ce505e8a60) at bamf-matcher.c:204
        view = <optimized out>
        factory = <optimized out>
#24 0x00007f42ab242ff5 in ffi_call_unix64 () at ../src/x86/unix64.S:101
No locals.
#25 0x00007f42ab24240a in ffi_call_int (cif=<optimized out>, fn=<optimized out>, rvalue=<optimized out>, avalue=<optimized out>, closure=<optimized out>) at ../src/x86/ffi64.c:669
        classes = {X86_64_INTEGER_CLASS, 32766, 2664355024, 32766}
        stack = <optimized out>
        argp = 0x7ffe9eced350 ""
        arg_types = <optimized out>
        gprcount = 4
        ssecount = <optimized out>
        ngpr = 1
        nsse = 0
        i = <optimized out>
        avn = <optimized out>
        flags = <optimized out>
        reg_args = <optimized out>
#26 0x00007f42ab73030d in g_cclosure_marshal_generic () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.0
No symbol table info available.
#27 0x00007f42ab72f802 in g_closure_invoke () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.0
No symbol table info available.
#28 0x00007f42ab743814 in signal_emit_unlocked_R () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.0
No symbol table info available.
#29 0x00007f42ab74da37 in g_signal_emitv () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.0
No symbol table info available.
#30 0x00007f42aad882cd in _bamf_dbus_matcher_proxy_g_signal (proxy=<optimized out>, sender_name=<optimized out>, signal_name=<optimized out>, parameters=<optimized out>) at bamf-gdbus-generated.c:4732
        info = 0x7f42aafa3a40 <__bamf_dbus_matcher_signal_info_view_closed>
        iter = {x = {139924061915472, 2, 2, 0, 140731562776608, 1, 140731562776688, 3579507750, 0, 94344601451648, 94343252738049, 150, 144, 140731562777264, 140731562777264, 140731562777264}}
        child = 0x0
        paramv = 0x55ce50810000
        num_params = 2
        n = <optimized out>
        signal_id = <optimized out>
#31 0x00007f42ab72f802 in g_closure_invoke () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.0
No symbol table info available.
#32 0x00007f42ab742f96 in signal_emit_unlocked_R () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.0
No symbol table info available.
#33 0x00007f42ab74eb9e in g_signal_emit_valist () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.0
No symbol table info available.
#34 0x00007f42ab74f0d3 in g_signal_emit () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.0
No symbol table info available.
#35 0x00007f42ab896ce0 in on_signal_received (connection=<optimized out>, sender_name=0x7f429c0099f0 ":1.71", object_path=<optimized out>, interface_name=<optimized out>, signal_name=0x7f429c01a380 "ViewClosed", parameters=0x7f429c018950, user_data=0x55ce50667180) at ../../../gio/gdbusproxy.c:884
        proxy_weak = 0x55ce50667180
        proxy = 0x55ce506dae30
#36 0x00007f42ab8847df in emit_signal_instance_in_idle_cb (data=0x7f429c019f70) at ../../../gio/gdbusconnection.c:3777
        signal_instance = 0x7f429c019f70
        parameters = 0x7f429c018950
        has_subscription = 1
#37 0x00007f42ab643e8e in g_main_context_dispatch () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#38 0x00007f42ab644240 in g_main_context_iterate.isra () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#39 0x00007f42ab6442e3 in g_main_context_iteration () from /tmp/apport_sandbox_sxg1e8r0/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.0
No symbol table info available.
#40 0x00007f42ab85dec5 in g_application_run (application=0x55ce5039a2a0, argc=<optimized out>, argv=<optimized out>) at ../../../gio/gapplication.c:2559
        arguments = 0x55ce50398110
        status = 0
        context = 0x55ce503a30b0
        acquired_context = 1
        __func__ = "g_application_run"
#41 0x000055ce4e599746 in plank_main ()
No symbol table info available.
#42 0x00007f42ab3650b3 in __libc_start_main () from /tmp/apport_sandbox_sxg1e8r0/lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#43 0x000055ce4e5992ce in _start ()
No symbol table info available.