diff --git a/internal/rdb/inspect.go b/internal/rdb/inspect.go
index 2417563..31e1fbf 100644
--- a/internal/rdb/inspect.go
+++ b/internal/rdb/inspect.go
@@ -942,7 +942,6 @@ func (r *RDB) archiveAll(src, dst, qname string) (int64, error) {
 	keys := []string{
 		src,
 		dst,
-		base.AllQueues,
 	}
 	now := time.Now()
 	argv := []interface{}{
@@ -1107,15 +1106,11 @@ func (r *RDB) deleteAll(key, qname string) (int64, error) {
 	if err := r.checkQueueExists(qname); err != nil {
 		return 0, err
 	}
-	keys := []string{
-		key,
-		base.AllQueues,
-	}
 	argv := []interface{}{
 		base.TaskKeyPrefix(qname),
 		qname,
 	}
-	res, err := deleteAllCmd.Run(r.client, keys, argv...).Result()
+	res, err := deleteAllCmd.Run(r.client, []string{key}, argv...).Result()
 	if err != nil {
 		return 0, err
 	}
@@ -1369,33 +1364,33 @@ var listWorkersCmd = redis.NewScript(`
 local now = tonumber(ARGV[1])
 local keys = redis.call("ZRANGEBYSCORE", KEYS[1], now, "+inf")
 redis.call("ZREMRANGEBYSCORE", KEYS[1], "-inf", now-1)
-local res = {}
-for _, key in ipairs(keys) do
-	local vals = redis.call("HVALS", key)
-	for _, v in ipairs(vals) do
-		table.insert(res, v)
-	end
-end
-return res`)
+return keys`)
 
 // ListWorkers returns the list of worker stats.
 func (r *RDB) ListWorkers() ([]*base.WorkerInfo, error) {
+	var op errors.Op = "rdb.ListWorkers"
 	now := time.Now()
 	res, err := listWorkersCmd.Run(r.client, []string{base.AllWorkers}, now.Unix()).Result()
 	if err != nil {
-		return nil, err
+		return nil, errors.E(op, errors.Unknown, err)
 	}
-	data, err := cast.ToStringSliceE(res)
+	keys, err := cast.ToStringSliceE(res)
 	if err != nil {
-		return nil, err
+		return nil, errors.E(op, errors.Internal, fmt.Sprintf("unexpeced return value from Lua script: %v", res))
 	}
 	var workers []*base.WorkerInfo
-	for _, s := range data {
-		w, err := base.DecodeWorkerInfo([]byte(s))
+	for _, key := range keys {
+		data, err := r.client.HVals(key).Result()
 		if err != nil {
 			continue // skip bad data
 		}
-		workers = append(workers, w)
+		for _, s := range data {
+			w, err := base.DecodeWorkerInfo([]byte(s))
+			if err != nil {
+				continue // skip bad data
+			}
+			workers = append(workers, w)
+		}
 	}
 	return workers, nil
 }