#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, 
    no_tid=no_tid@entry=0) at pthread_kill.c:44
#1  0x00007ffff79ad6d3 in __pthread_kill_internal (threadid=<optimized out>, signo=6)
    at pthread_kill.c:89
#2  0x00007ffff7953ba0 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
#3  0x00007ffff793b582 in __GI_abort () at abort.c:73
#4  0x00005555556a84c2 in ?? ()
#5  0x00005555556abffe in ?? ()
#6  0x00007ffff7f106d5 in _Unwind_ForcedUnwind_Phase2 (exc=exc@entry=0x7fffebf70d30, 
    context=context@entry=0x7fffebf6fb50, frames_p=frames_p@entry=0x7fffebf6fa58)
    at /usr/src/debug/gcc/gcc/libgcc/unwind.inc:183
#7  0x00007ffff7f10db0 in _Unwind_ForcedUnwind (exc=0x7fffebf70d30, 
    stop=stop@entry=0x7ffff79b4160 <unwind_stop>, stop_argument=<optimized out>)
    at /usr/src/debug/gcc/gcc/libgcc/unwind.inc:218
#8  0x00007ffff79b4325 in __GI___pthread_unwind (buf=<optimized out>) at unwind.c:130
#9  0x00007ffff79b2c91 in __do_cancel (result=0xffffffffffffffff)
    at ../sysdeps/nptl/pthreadP.h:273
#10 ___pthread_testcancel () at pthread_testcancel.c:28
#11 ___pthread_testcancel () at pthread_testcancel.c:23
#12 0x00005555556b5543 in ?? ()
#13 0x00007ffff79ab70a in start_thread (arg=<optimized out>) at pthread_create.c:448
#14 0x00007ffff7a2faac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78