func IsRepoNotFoundErr(err error) bool {
	if err == nil {
		return false
	}
	return repoNotFoundRe.MatchString(err.Error())
}
func IsRepoNotFoundErr(err error) bool {
	if err == nil {
		return false
	}
	return repoNotFoundRe.MatchString(err.Error())
}
// IsRepoNotFoundErr returns true if 'err' is an error message about a repo
// not being found