#0  0x000076713ec2c7a7 in __GI___wait4 (pid=-1, stat_loc=0x7ffd2ac09fe0, options=0, usage=0x0) at ../sysdeps/unix/sysv/linux/wait4.c:30
        sc_ret = -512
        sc_ret = <optimized out>
#1  0x00006386c06e26f3 in ?? ()
No symbol table info available.
#2  0x00006386c062ff38 in wait_for ()
No symbol table info available.
#3  0x00006386c060f804 in execute_command_internal ()
No symbol table info available.
#4  0x00006386c06141f3 in ?? ()
No symbol table info available.
#5  0x00006386c0612023 in execute_command_internal ()
No symbol table info available.
#6  0x00006386c0612c6e in execute_command ()
No symbol table info available.
#7  0x00006386c060510c in reader_loop ()
No symbol table info available.
#8  0x00006386c05f8efb in main ()
No symbol table info available.