// skipping bucket usage cache name, as its autogenerated.
						continue
					}

					versionsFound++
				}
			}); err != nil {
				return err
			}

			if versionsFound > 0 {
				return fmt.Errorf("at least %d object(s)/version(s) were found in bucket `%s` after decommissioning", versionsFound, bi.Name)
			}
		}
	}

	return nil
}

			if matchedFilter.Purge.RetainVersions == 0 {
				continue // including latest version in toDel suffices, skipping other versions
			}
			versionsCount++
		} else {
			continue
		}

		if versionsCount <= matchedFilter.Purge.RetainVersions {
			continue // retain versions
		}
		toDel = append(toDel, expireObjInfo{
			ObjectInfo: result.Item,
		})
	}

	for _, bucket := range buckets {
		e := d.find(bucket.Name)
		if e == nil {
			continue
		}
		flat := d.flatten(*e)
		bui := BucketUsageInfo{
			Size:                    uint64(flat.Size),
			VersionsCount:           flat.Versions,
			ObjectsCount:            flat.Objects,
			DeleteMarkersCount:      flat.DeleteMarkers,
			ObjectSizesHistogram:    flat.ObjSizes.toMap(),
			ObjectVersionsHistogram: flat.ObjVersions.toMap(),