JournalTest.cleanupTest failure on CI

java.lang.AssertionError: expected:<0> but was:<1>
	at org.junit.Assert.fail(Assert.java:93)
	at org.junit.Assert.failNotEquals(Assert.java:647)
	at org.junit.Assert.assertEquals(Assert.java:128)
	at org.junit.Assert.assertEquals(Assert.java:472)
	at org.junit.Assert.assertEquals(Assert.java:456)
	at org.apache.jackrabbit.oak.plugins.document.JournalTest.cleanupTest(JournalTest.java:183)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)