#0  0x00007f70753cffb7 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
        set = {__val = {0, 93891631369213, 93891633677856, 140120981703840, 93891631369356, 2064, 129, 140120981703744, 18446744073709551536, 0, 2048, 140120980338365, 551368720384, 140120981703840, 127, 343597383837}}
        pid = <optimized out>
        tid = <optimized out>
#1  0x00007f70753b1535 in __GI_abort () at abort.c:79
        save_stage = 1
        act = {__sigaction_handler = {sa_handler = 0x7f707615181b, sa_sigaction = 0x7f707615181b}, sa_mask = {__val = {11626575254519809, 0, 153, 93891595584784, 13633401375222288896, 75, 140120994158619, 140120994180365, 140121982631936, 93891595584784, 0, 0, 13633401375222288896, 140120982913880, 93891595584784, 154}}, sa_flags = 1981595136, sa_restorer = 0x7ffc6c54b570}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f70760c7dc3 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7076122bfa in g_assertion_message_expr () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f707566da16 in  () at /usr/lib/x86_64-linux-gnu/libmutter-4.so.0
#5  0x00007f70756727e7 in  () at /usr/lib/x86_64-linux-gnu/libmutter-4.so.0
#6  0x00007f70760fa958 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f70760fad48 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f70760fb042 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f707560d50c in meta_run () at /usr/lib/x86_64-linux-gnu/libmutter-4.so.0
#10 0x00005564d50c8847 in  ()
#11 0x00007f70753b2b6b in __libc_start_main (main=0x5564d50c8460, argc=1, argv=0x7ffc6c54b978, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc6c54b968) at ../csu/libc-start.c:308
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 3930713722554946192, 93891559459184, 140722125977968, 0, 0, 7187113878508278416, 7108354912077091472}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7ffc6c54b988, 0x7f70766a0190}, data = {prev = 0x0, cleanup = 0x0, canceltype = 1817491848}}}
        not_first_call = <optimized out>
#12 0x00005564d50c899a in  ()