javax.persistence.RollbackException: Error while committing the transaction
	at org.hibernate.jpa.internal.TransactionImpl.commit(TransactionImpl.java:94)
	at org.hibernate.jpa.test.lock.QueryLockingTest.testNoVersionCheckAfterRemove(QueryLockingTest.java:316)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.hibernate.testing.junit4.ExtendedFrameworkMethod.invokeExplosively(ExtendedFrameworkMethod.java:62)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
Caused by: javax.persistence.OptimisticLockException: Newer version [null] of entity [[org.hibernate.jpa.test.lock.Lockable#1]] found in database
	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.wrapLockException(AbstractEntityManagerImpl.java:1809)
	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1710)
	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1677)
	at org.hibernate.jpa.internal.TransactionImpl.commit(TransactionImpl.java:82)
	... 13 more
Caused by: org.hibernate.OptimisticLockException: Newer version [null] of entity [[org.hibernate.jpa.test.lock.Lockable#1]] found in database
	at org.hibernate.action.internal.EntityVerifyVersionProcess.doBeforeTransactionCompletion(EntityVerifyVersionProcess.java:68)
	at org.hibernate.engine.spi.ActionQueue$BeforeTransactionCompletionProcessQueue.beforeTransactionCompletion(ActionQueue.java:715)
	at org.hibernate.engine.spi.ActionQueue.beforeTransactionCompletion(ActionQueue.java:389)
	at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:516)
	at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:105)
	at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:177)
	at org.hibernate.jpa.internal.TransactionImpl.commit(TransactionImpl.java:77)
	... 13 more