Build failure of neo4j/community/kernel as follows:
git clone https://github.com/neo4j/neo4j.git
cd neo4j/community/kernel
git checkout 2.2.0-M02
mvn install


Tests run: 6, Failures: 0, Errors: 5, Skipped: 0, Time elapsed: 2.568 sec <<< FAILURE! - in org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.EncodingIdMapperTest
shouldEncodeShortStrings(org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.EncodingIdMapperTest)  Time elapsed: 0.06 sec  <<< ERROR!
java.lang.ArithmeticException: / by zero
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.ParallelSort.sortRadix(ParallelSort.java:94)
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.ParallelSort.run(ParallelSort.java:55)
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.EncodingIdMapper.prepare(EncodingIdMapper.java:128)
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.EncodingIdMapperTest.shouldEncodeShortStrings(EncodingIdMapperTest.java:135)

shouldReturnExpectedValueForNotFound(org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.EncodingIdMapperTest)  Time elapsed: 0 sec  <<< ERROR!
java.lang.ArithmeticException: / by zero
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.ParallelSort.sortRadix(ParallelSort.java:94)
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.ParallelSort.run(ParallelSort.java:55)
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.EncodingIdMapper.prepare(EncodingIdMapper.java:128)
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.EncodingIdMapperTest.shouldReturnExpectedValueForNotFound(EncodingIdMapperTest.java:117)

shouldCopyWithCollisionsBasedOnDifferentInputIds(org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.EncodingIdMapperTest)  Time elapsed: 0.015 sec  <<< ERROR!
java.lang.ArithmeticException: / by zero
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.ParallelSort.sortRadix(ParallelSort.java:94)
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.ParallelSort.run(ParallelSort.java:55)
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.EncodingIdMapper.prepare(EncodingIdMapper.java:128)
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.EncodingIdMapperTest.shouldCopyWithCollisionsBasedOnDifferentInputIds(EncodingIdMapperTest.java:226)

shouldHandleGreatAmountsOfStuff(org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.EncodingIdMapperTest)  Time elapsed: 0.157 sec  <<< ERROR!
java.lang.ArithmeticException: / by zero
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.ParallelSort.sortRadix(ParallelSort.java:94)
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.ParallelSort.run(ParallelSort.java:55)
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.EncodingIdMapper.prepare(EncodingIdMapper.java:128)
	at org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.EncodingIdMapperTest.shouldHandleGreatAmountsOfStuff(EncodingIdMapperTest.java:97)

shouldRefuseCollisionsBasedOnSameInputId(org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.EncodingIdMapperTest)  Time elapsed: 0.007 sec  <<< ERROR!
java.lang.ArithmeticException: null