ExpirationSingleFileStoreDistListenerFunctionalTest random failures

[ERROR] testExpirationOfStoreWhenDataNotInMemory[null](org.infinispan.expiration.impl.ExpirationSingleFileStoreDistListenerFunctionalTest)  Time elapsed: 0.078 s  <<< FAILURE!
java.lang.AssertionError: expected:<0> but was:<7>
	at org.testng.AssertJUnit.fail(AssertJUnit.java:59)
	at org.testng.AssertJUnit.failNotEquals(AssertJUnit.java:364)
	at org.testng.AssertJUnit.assertEquals(AssertJUnit.java:80)
	at org.testng.AssertJUnit.assertEquals(AssertJUnit.java:245)
	at org.testng.AssertJUnit.assertEquals(AssertJUnit.java:252)
	at org.infinispan.expiration.impl.ExpirationStoreListenerFunctionalTest.testExpirationOfStoreWhenDataNotInMemory(ExpirationStoreListenerFunctionalTest.java:55)

[ERROR] testSimpleExpirationLifespan[null](org.infinispan.expiration.impl.ExpirationSingleFileStoreDistListenerFunctionalTest)  Time elapsed: 0.045 s  <<< FAILURE!
java.lang.AssertionError: expected:<0> but was:<1>
	at org.testng.AssertJUnit.fail(AssertJUnit.java:59)
	at org.testng.AssertJUnit.failNotEquals(AssertJUnit.java:364)
	at org.testng.AssertJUnit.assertEquals(AssertJUnit.java:80)
	at org.testng.AssertJUnit.assertEquals(AssertJUnit.java:245)
	at org.testng.AssertJUnit.assertEquals(AssertJUnit.java:252)
	at org.infinispan.expiration.impl.ExpirationFunctionalTest.testSimpleExpirationLifespan(ExpirationFunctionalTest.java:78)
	at org.infinispan.expiration.impl.ExpirationStoreListenerFunctionalTest.testSimpleExpirationLifespan(ExpirationStoreListenerFunctionalTest.java:37)

[ERROR] testSimpleExpirationMaxIdle[null](org.infinispan.expiration.impl.ExpirationSingleFileStoreDistListenerFunctionalTest)  Time elapsed: 0 s  <<< FAILURE!
java.lang.AssertionError: expected:<0> but was:<1>
	at org.testng.AssertJUnit.fail(AssertJUnit.java:59)
	at org.testng.AssertJUnit.failNotEquals(AssertJUnit.java:364)
	at org.testng.AssertJUnit.assertEquals(AssertJUnit.java:80)
	at org.testng.AssertJUnit.assertEquals(AssertJUnit.java:245)
	at org.testng.AssertJUnit.assertEquals(AssertJUnit.java:252)
	at org.infinispan.expiration.impl.ExpirationFunctionalTest.testSimpleExpirationMaxIdle(ExpirationFunctionalTest.java:86)
	at org.infinispan.expiration.impl.ExpirationStoreListenerFunctionalTest.testSimpleExpirationMaxIdle(ExpirationStoreListenerFunctionalTest.java:44)