javax.persistence.PersistenceException: org.hibernate.HibernateException: An immutable natural identifier of entity org.hibernate.test.bytecode.enhancement.lazy.proxy.NaturalIdInUninitializedProxyTest$EntityImmutableNaturalId was altered from name to null
	at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154)
	at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181)
	at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188)
	at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1489)
	at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:512)
	at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3321)
	at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2517)
	at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:447)
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:178)
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access(JdbcResourceLocalTransactionCoordinatorImpl.java:39)
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:271)
	at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:104)
	at org.hibernate.testing.transaction.TransactionUtil2.inTransaction(TransactionUtil2.java:113)
	at org.hibernate.testing.transaction.TransactionUtil2.lambda$inTransaction(TransactionUtil2.java:61)
	at org.hibernate.testing.transaction.TransactionUtil2.inSession(TransactionUtil2.java:35)
	at org.hibernate.testing.transaction.TransactionUtil2.inTransaction(TransactionUtil2.java:59)
	at org.hibernate.testing.junit4.BaseNonConfigCoreFunctionalTestCase.inTransaction(BaseNonConfigCoreFunctionalTestCase.java:572)
	at org.hibernate.test.bytecode.enhancement.lazy.proxy.NaturalIdInUninitializedProxyTest.testImmutableNaturalId(NaturalIdInUninitializedProxyTest.java:43)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at org.junit.runners.model.FrameworkMethod.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.hibernate.testing.junit4.ExtendedFrameworkMethod.invokeExplosively(ExtendedFrameworkMethod.java:45)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:298)
	at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:292)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.hibernate.HibernateException: An immutable natural identifier of entity org.hibernate.test.bytecode.enhancement.lazy.proxy.NaturalIdInUninitializedProxyTest$EntityImmutableNaturalId was altered from name to null
	at org.hibernate.event.internal.DefaultFlushEntityEventListener.checkNaturalId(DefaultFlushEntityEventListener.java:114)
	at org.hibernate.event.internal.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:191)
	at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:146)
	at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:235)
	at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:94)
	at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:38)
	at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1483)
	... 29 more