go func() {
			defer wg.Done()
			// Sync start.
			<-start
			if err := obj.MakeBucket(GlobalContext, bucketName1, MakeBucketOptions{}); err != nil {
				if _, ok := err.(BucketExists); !ok {
					t.Logf("unexpected error: %T: %v", err, err)
					return
				}
				mu.Lock()
				errs++
				mu.Unlock()
				return
			}
			mu.Lock()
			ok++
			mu.Unlock()
		}()
	}
	close(start)

			WrittenByVersion: globalVersionUnix,
		}
		xl.data = nil
		xl.versions = xl.versions[:2]
		xl.addVersion(ventry)

		data, err = xl.AppendTo(nil)
		if err != nil {
			t.Fatal(err)
		}
		// t.Logf("data := %#v\n", data)
	})
	// Test compressed index consistency fix
	t.Run("comp-index", func(t *testing.T) {
		// This file has a compressed index, due to https://github.com/minio/minio/pull/20575