#0  0x00007f01a29b8475 in __GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
        resultvar = 0
        pid = <optimized out>
        selftid = 30807
#1  0x00007f01a29bbbdb in __GI_abort () at abort.c:91
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0xb4ab9b50, sa_sigaction = 0xb4ab9b50}, sa_mask = {__val = {139645086101805, 139645202502400, 139645114444343, 54704882567, 882567935, 139645202502400, 139645114444378, 54704882567, 139645202502400, 139642326399730, 0, 184, 139645114357045, 139645168308064, 139645168282336, 139645202310480}}, sa_flags = -1460998184, sa_restorer = 0x7f010342baf2}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f01a96c0949 in base::debug::BreakDebugger() ()
No symbol table info available.
#3  0x00007f01a96f888f in base::Watchdog::ThreadDelegate::ThreadMain() ()
No symbol table info available.
#4  0x00007f01a96f76f2 in base::(anonymous namespace)::ThreadFunc(void*) ()
No symbol table info available.
#5  0x00007f01a4e20e9a in start_thread (arg=0x7f019297d700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f019297d700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 1576887886394153831, 140734364149328, 139644731120064, 139645201945296, 3, -1449844610699109529, -1449751257502459033}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007f01a2a7277d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#7  0x0000000000000000 in ?? ()
No symbol table info available.