As Kiran already mentioned, it builds only with JDK 1.7. Could it be
that Mavibot was build using JDK 1.7?
Running
org.apache.directory.server.core.partition.impl.btree.mavibot.MavibotRdnIndexTest
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.034
sec <<< FAILURE! - in
org.apache.directory.server.core.partition.impl.btree.mavibot.MavibotRdnIndexTest
initializationError(org.apache.directory.server.core.partition.impl.btree.mavibot.MavibotRdnIndexTest)
Time elapsed: 0.008 sec <<< ERROR!
java.lang.UnsupportedClassVersionError:
org/apache/directory/mavibot/btree/RecordManager : Unsupported
major.minor version 51.0
[X] +1 : release ApacheDS 2.0.0-M15
Regards
Felix