code: func stacks() []byte {
  	buf := make([]byte, 1024*16)
  	for {
  		n := runtime.Stack(buf, true)
  		if n < len(buf) {
  			return buf[:n]
  		}
  		buf = make([]byte, 2*len(buf))
  	}
  }
docs: // Stacktraces for all goroutines.