java.lang.AssertionError: 
	at org.infinispan.lock.impl.lock.ClusteredLockImplTest.testTryLockWithTimeoutAfterLockWithSmallTimeout(ClusteredLockImplTest.java:94)

It happens rarely in CI, but I can reproduce it every time if I change the timeout to 100 ms. IMO the difference between testTryLockWithTimeoutAfterLockWithSmallTimeout and testTryLockWithTimeoutAfterLockWithBigTimeout should be that the former waits for tryLock(smalltimeout, unit) to time out before unlocking, and the latter waits for a little time before unlocking and checks that tryLock(bigtimeout, unit) still succeeds.