defer sys.aMutex.RUnlock()
	if v, ok := sys.arnErrsMap[arn]; ok {
		return v.updateInProgress
	}
	return false
}

func (sys *BucketTargetSys) incTargetErr(bucket, arn string) {
	sys.aMutex.Lock()
	defer sys.aMutex.Unlock()
	if v, ok := sys.arnErrsMap[arn]; ok {
		sys.arnErrsMap[arn] = arnErrs{
			updateInProgress: v.updateInProgress,
			count:            v.count + 1,
		}
	}
}

)

func verifyBinary(u *url.URL, sha256Sum []byte, releaseInfo, mode string, reader io.Reader) (err error) {
	if !updateInProgress.CompareAndSwap(0, 1) {
		return errors.New("update already in progress")
	}
	defer updateInProgress.Store(0)

	transport := getUpdateTransport(30 * time.Second)
	opts := selfupdate.Options{
		Hash:     crypto.SHA256,
		Checksum: sha256Sum,
	}