// Copying toDel to select from objects whose
				// deletion failed
				copy(toDelCopy, toDel)
				var failed int
				errs := r.Expire(ctx, api, vc, toDel)
				// reslice toDel in preparation for next retry
				// attempt
				toDel = toDel[:0]
				for i, err := range errs {
					if err != nil {
						stopFn(toDelCopy[i], err)