When test tries to find 'serialized' dir it could fail with message:
LocaleEnhanceTest {
  testBuilderAddUnicodeLocaleAttribute Passed
  testCreateLocaleCanonicalValid Passed
  testBuilderSetLanguage Passed
  testBuilderSetVariant Passed
  testGetUnicodeLocaleKeys Passed
  testDeserialize6 {
    Could not locate the serialized test case data location
  } FAILED
It would be nice in this case to exactly report dir which it tries to find. So it should be clear from report does it exist, is it NFS etc.

The exact location is here:
1164 if (dataDir == null || !dataDir.isDirectory()) {
1165 errln("Could not locate the serialized test case data location");
1166 return;
1167 }