go func() {
		defer xioutil.SafeClose(diffCh)
		for res := range objInfoCh {
			if res.Err != nil {
				diffCh <- madmin.DiffInfo{Err: res.Err}
				return
			}
			if contextCanceled(ctx) {
				// Just consume input...
				continue
			}
			obj := res.Item

			// Ignore object prefixes which are excluded
			// from versioning via the MinIO bucket versioning extension.