AssertionError in IntegrityCheckTest

[Peter Beaman]

The method IntegrityCheckTest#testPruneRemovesAbortedTransactionStatus() failed during a build with this assertion:

java.lang.AssertionError:
 at org.junit.Assert.fail(Assert.java:91)
 at org.junit.Assert.assertTrue(Assert.java:43)
 at org.junit.Assert.assertTrue(Assert.java:54)
 at com.persistit.IntegrityCheckTest.testPruneRemovesAbortedTransactionStatus(IntegrityCheckTest.java:204)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 ...

The test was subject to a race between the CLEANUP_MANAGER thread and main.