Test fail on Windows - Unable to delete directory

When running "mvn clean test", some of the tests fail because a directory cannot be deleted.

An example:
java.io.IOException: Unable to delete file: C:\Users\TRACYM~1\AppData\Local\Temp\zookeeper6811260662521660350com.twitter.distributedlog.ZooKeeperClusterTestCase\version-2\log.1
at org.apache.commons.io.FileUtils.forceDelete(FileUtils.java:1919)
at org.apache.commons.io.FileUtils.cleanDirectory(FileUtils.java:1399)
at org.apache.commons.io.FileUtils.deleteDirectory(FileUtils.java:1331)
at org.apache.commons.io.FileUtils.forceDelete(FileUtils.java:1910)
at org.apache.commons.io.FileUtils.cleanDirectory(FileUtils.java:1399)
at org.apache.commons.io.FileUtils.deleteDirectory(FileUtils.java:1331)
at com.twitter.distributedlog.ZooKeeperClusterTestCase.shutdownZooKeeper(ZooKeeperClusterTestCase.java:50)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:37)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:53)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:123)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:104)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110)
at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:172)
at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcessWhenForked(SurefireStarter.java:78)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:70)