#0  0x00007f2611168117 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        resultvar = 0
        pid = 2229
        selftid = 2229
#1  0x00007f2611169808 in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7f2612f2ac59, sa_sigaction = 0x7f2612f2ac59}, sa_mask = {__val = {0, 139801481302944, 139801524069799, 140733193388037, 0, 4294967296, 139801471974696, 69589008, 139801481302944, 114, 139801524098437, 0, 228, 0, 0, 139801475876704}}, sa_flags = 2081, sa_restorer = 0x7f26114f07b8 <main_arena+88>}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f26117821c5 in g_assertion_message () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f261178225a in g_assertion_message_expr () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f2612ef5dda in meta_window_unmanage () from /usr/lib/libmutter.so.0
No symbol table info available.
#5  0x00007f2612ec7971 in ?? () from /usr/lib/libmutter.so.0
No symbol table info available.
#6  0x00007f2612f16a13 in ?? () from /usr/lib/libmutter.so.0
No symbol table info available.
#7  0x00007f260e037a81 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
No symbol table info available.
#8  0x00007f260e037d4e in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
No symbol table info available.
#9  0x00007f260e00f449 in gdk_display_get_event () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
No symbol table info available.
#10 0x00007f260e037b02 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
No symbol table info available.
#11 0x00007f261175dde4 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#12 0x00007f261175e028 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#13 0x00007f261175e2ea in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#14 0x00007f2612ed42c1 in meta_run () from /usr/lib/libmutter.so.0
No symbol table info available.
#15 0x0000000000401d11 in ?? ()
No symbol table info available.
#16 0x00007f2611152ec5 in __libc_start_main (main=0x401a00, argc=1, argv=0x7fffc2471ad8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffc2471ac8) at libc-start.c:287
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 7598327760947997705, 4201957, 140736452827856, 0, 0, -7598370432646157303, -7548440906723922935}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x402230, 0x7fffc2471ad8}, data = {prev = 0x0, cleanup = 0x0, canceltype = 4203056}}}
        not_first_call = <optimized out>
#17 0x0000000000401e0e in ?? ()
No symbol table info available.