return
	}

	var parseError error
	atoi := func(s string) int {
		x, err := strconv.Atoi(s)
		if err != nil && parseError == nil {
			parseError = err
		}
		return x
	}
	var major, minor, patch int
	major = atoi(string(matches[1]))
	if len(matches[2]) > 0 {
		minor = atoi(string(matches[2][1:]))
	}
	if len(matches[3]) > 0 {
		patch = atoi(string(matches[3][1:]))
	}
	if parseError != nil {