sourceFailed = true
		}
	}()
	go func() {
		defer wg.Done()
		tgtSize, err := io.Copy(tgtSha256, tobj)
		if err != nil {
			fmt.Printf("unreadable on target: %s (%s)\n", tgtCtnt.Key, err)
			targetFailed = true
		} else if tgtSize != tgtCtnt.Size {
			fmt.Printf("unreadable on target - size differs upon read: %s\n", tgtCtnt.Key)
			targetFailed = true

	}
	return nums
}

var (
	file, object, deploymentID, prefix string
	setCount, shards                   int
	verbose                            bool
)

func main() {
	flag.StringVar(&file, "file", "", "Read all objects from file, newline separated")
	flag.StringVar(&prefix, "prefix", "", "Add prefix to all objects")
	flag.StringVar(&object, "object", "", "Select an object")