RestrictiveFilePermissionsTest fails on Windows

.F.F.F.F.F.F.F.F.F.F.F.F.F..
Time: 48,93
There were 13 failures:
1) testBackupRestoreFiles(org.apache.derbyTesting.functionTests.tests.engine.RestrictiveFilePermissionsTest)junit.framework.AssertionFailedError: unexpected uid \OPPRETTER EIER can access file C:\cygwin64\tmp\derbytst\system\RFPT_backup
	at org.apache.derbyTesting.functionTests.tests.engine.RestrictiveFilePermissionsTest$2.run(RestrictiveFilePermissionsTest.java:758)
	at org.apache.derbyTesting.functionTests.tests.engine.RestrictiveFilePermissionsTest$2.run(RestrictiveFilePermissionsTest.java:597)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.apache.derbyTesting.functionTests.tests.engine.RestrictiveFilePermissionsTest.checkAccessToOwner(RestrictiveFilePermissionsTest.java:597)
	at org.apache.derbyTesting.functionTests.tests.engine.RestrictiveFilePermissionsTest.checkAccessToOwner(RestrictiveFilePermissionsTest.java:582)
	at org.apache.derbyTesting.functionTests.tests.engine.RestrictiveFilePermissionsTest.testBackupRestoreFiles(RestrictiveFilePermissionsTest.java:372)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:120)
	at org.apache.derbyTesting.junit.BaseJDBCTestCase.runBareOverridable(BaseJDBCTestCase.java:443)
	at org.apache.derbyTesting.junit.BaseJDBCTestCase.runBare(BaseJDBCTestCase.java:460)
	at junit.extensions.TestDecorator.basicRun(TestDecorator.java:23)
	at junit.extensions.TestSetup$1.protect(TestSetup.java:23)
	at junit.extensions.TestSetup.run(TestSetup.java:27)
	at junit.extensions.TestDecorator.basicRun(TestDecorator.java:23)
	at junit.extensions.TestSetup$1.protect(TestSetup.java:23)
	at junit.extensions.TestSetup.run(TestSetup.java:27)
	at org.apache.derbyTesting.junit.BaseTestSetup.run(BaseTestSetup.java:58)
	at junit.extensions.TestDecorator.basicRun(TestDecorator.java:23)
	at junit.extensions.TestSetup$1.protect(TestSetup.java:23)
	at junit.extensions.TestSetup.run(TestSetup.java:27)
	at junit.extensions.TestDecorator.basicRun(TestDecorator.java:23)
	at junit.extensions.TestSetup$1.protect(TestSetup.java:23)
	at junit.extensions.TestSetup.run(TestSetup.java:27)