Error: segmentation violation
   rax 0000000000000000, rbx 00000000013dc140, rcx ffffffffffffffff
   rdx 00000000000008fb, rsp 00007fffe5ff9138, rbp 00007fffe5ff9160
   rsi 000000000000000b, rdi 00000000000008fb, r8  00007fdf3256b740
   r9  0000000000000000, r10 00007fffe5ff8ba0, r11 0000000000000202
   r12 00007fffe5ff9660, r13 000000000238f520, r14 00000000013c5630
   r15 00007fdf2186ace0
  --- traceback not available