I'm trying to build logback. I cloned from github (HEAD is at commit eea3086a0b813a73f3539dbf286078403843839e) and ran "mvn install". There is one repeatable failure, multiDate(ch.qos.logback.core.rolling.TimeBasedFileNamingAndTriggeringPolicyBaseTest): expected:<foo-2011-12/59.log> but was:<null>, with the surefire report below. Environment: Mac OS X 10.7.2 Java 1.6.0_29 Maven 3.0.3 Am I alone in seeing this failure? Regards, Glyn P.S. The logback core tests took around 8 seconds, so the elapsed time below (9 days) is a little off. ------------------------------------------------------------------------------- Test set: ch.qos.logback.core.rolling.TimeBasedFileNamingAndTriggeringPolicyBaseTest ------------------------------------------------------------------------------- Tests run: 2, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 780,969.877 sec <<< FAILURE! singleDate(ch.qos.logback.core.rolling.TimeBasedFileNamingAndTriggeringPolicyBaseTest) Time elapsed: 0 secmultiDate(ch.qos.logback.core.rolling.TimeBasedFileNamingAndTriggeringPolicyBaseTest) Time elapsed: 0.002 sec <<< FAILURE! java.lang.AssertionError: expected:<foo-2011-12/59.log> but was:<null> 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:147) at ch.qos.logback.core.rolling.TimeBasedFileNamingAndTriggeringPolicyBaseTest.multiDate(TimeBasedFileNamingAndTriggeringPolicyBaseTest.java:65) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222) at org.junit.runners.ParentRunner.run(ParentRunner.java:300) at org.junit.runners.Suite.runChild(Suite.java:128) at org.junit.runners.Suite.runChild(Suite.java:24) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:680)