// Delete...
			h.QueuedBuckets = append(h.QueuedBuckets[:i], h.QueuedBuckets[i+1:]...)
		}
	}
}

// setQueuedBuckets will add buckets, but exclude any that is already in h.HealedBuckets.
// Order is preserved.
func (h *healingTracker) setQueuedBuckets(buckets []BucketInfo) {
	h.mu.Lock()
	defer h.mu.Unlock()

	s := set.CreateStringSet(h.HealedBuckets...)
	h.QueuedBuckets = make([]string, 0, len(buckets))