Occasionally the test fails with:

java.lang.AssertionError: null
at org.junit.Assert.fail(Assert.java:86)
at org.junit.Assert.assertTrue(Assert.java:41)
at org.junit.Assert.assertNotNull(Assert.java:621)
at org.junit.Assert.assertNotNull(Assert.java:631)
at org.infinispan.server.test.cs.jdbc.SingleNodeJdbcStoreIT.testRestartStringStoreAfter(SingleNodeJdbcStoreIT.java:195)
at org.infinispan.server.test.cs.jdbc.SingleNodeJdbcStoreIT.testForcedShutdown(SingleNodeJdbcStoreIT.java:151)

Upstream Commit:
https://github.com/infinispan/infinispan/commit/6c6d758a0af33fb7bf94d6df4a36babccb83b500