[JENKINS-EA] Lucene-Solr-6.x-Linux (64bit/jdk-9-ea+107) - Build # 31 - Still Failing!

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Build: http://jenkins.thetaphi.de/job/Lucene-Solr-6.x-Linux/31/
Java: 64bit/jdk-9-ea+107 -XX:-UseCompressedOops -XX:+UseG1GC

25 tests failed.
FAILED:  
org.apache.lucene.codecs.lucene50.TestLucene50CompoundFormat.testManySubFiles

Error Message:
Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.codecs.lucene50.TestLucene50CompoundFormat_370E8FD08B184AD3-001/CFSManySubFiles-001/_123.1707")

Stack Trace:
java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.codecs.lucene50.TestLucene50CompoundFormat_370E8FD08B184AD3-001/CFSManySubFiles-001/_123.1707")
        at 
__randomizedtesting.SeedInfo.seed([370E8FD08B184AD3:B00FBEEFEF8289C0]:0)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
        at 
org.apache.lucene.codecs.lucene50.Lucene50CompoundFormat.write(Lucene50CompoundFormat.java:90)
        at 
org.apache.lucene.index.BaseCompoundFormatTestCase.testManySubFiles(BaseCompoundFormatTestCase.java:385)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:880)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:781)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:816)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:827)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at java.lang.Thread.run(Thread.java:804)
Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
        ... 42 more


FAILED:  
org.apache.lucene.codecs.lucene60.TestLucene60PointFormat.testMultiClose

Error Message:
Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.codecs.lucene60.TestLucene60PointFormat_370E8FD08B184AD3-001/justSoYouGetSomeChannelErrors-001/_0_Lucene50_0.doc")

Stack Trace:
java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.codecs.lucene60.TestLucene60PointFormat_370E8FD08B184AD3-001/justSoYouGetSomeChannelErrors-001/_0_Lucene50_0.doc")
        at 
__randomizedtesting.SeedInfo.seed([370E8FD08B184AD3:B33363EB947A23CB]:0)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsReader.<init>(Lucene50PostingsReader.java:81)
        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsFormat.fieldsProducer(Lucene50PostingsFormat.java:443)
        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsReader.<init>(PerFieldPostingsFormat.java:261)
        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat.fieldsProducer(PerFieldPostingsFormat.java:341)
        at 
org.apache.lucene.index.BaseIndexFileFormatTestCase.testMultiClose(BaseIndexFileFormatTestCase.java:326)
        at 
org.apache.lucene.index.BasePointFormatTestCase.testMultiClose(BasePointFormatTestCase.java:54)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:880)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:781)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:816)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:827)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at java.lang.Thread.run(Thread.java:804)
Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
        ... 46 more


FAILED:  
org.apache.lucene.codecs.perfield.TestPerFieldPostingsFormat.testDocsAndFreqsAndPositions

Error Message:
Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.codecs.perfield.TestPerFieldPostingsFormat_370E8FD08B184AD3-001/testPostingsFormat.testExact-002/_0_FST50_0.doc")

Stack Trace:
java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.codecs.perfield.TestPerFieldPostingsFormat_370E8FD08B184AD3-001/testPostingsFormat.testExact-002/_0_FST50_0.doc")
        at 
__randomizedtesting.SeedInfo.seed([370E8FD08B184AD3:2D2D3B4173FB4AD7]:0)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsReader.<init>(Lucene50PostingsReader.java:81)
        at 
org.apache.lucene.codecs.memory.FSTPostingsFormat.fieldsProducer(FSTPostingsFormat.java:66)
        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsReader.<init>(PerFieldPostingsFormat.java:261)
        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat.fieldsProducer(PerFieldPostingsFormat.java:341)
        at 
org.apache.lucene.index.RandomPostingsTester.buildIndex(RandomPostingsTester.java:680)
        at 
org.apache.lucene.index.RandomPostingsTester.testFull(RandomPostingsTester.java:1253)
        at 
org.apache.lucene.index.BasePostingsFormatTestCase.testDocsAndFreqsAndPositions(BasePostingsFormatTestCase.java:110)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:880)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:781)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:816)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:827)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at java.lang.Thread.run(Thread.java:804)
Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
        ... 47 more


FAILED:  
org.apache.lucene.codecs.perfield.TestPerFieldPostingsFormat.testDocsAndFreqsAndPositionsAndPayloads

Error Message:
Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.codecs.perfield.TestPerFieldPostingsFormat_370E8FD08B184AD3-001/testPostingsFormat.testExact-004/_0_BlockTreeOrds_0.doc")

Stack Trace:
java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.codecs.perfield.TestPerFieldPostingsFormat_370E8FD08B184AD3-001/testPostingsFormat.testExact-004/_0_BlockTreeOrds_0.doc")
        at 
__randomizedtesting.SeedInfo.seed([370E8FD08B184AD3:81AE8E66B3FB8D45]:0)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsReader.<init>(Lucene50PostingsReader.java:81)
        at 
org.apache.lucene.codecs.blocktreeords.BlockTreeOrdsPostingsFormat.fieldsProducer(BlockTreeOrdsPostingsFormat.java:90)
        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsReader.<init>(PerFieldPostingsFormat.java:261)
        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat.fieldsProducer(PerFieldPostingsFormat.java:341)
        at 
org.apache.lucene.index.RandomPostingsTester.buildIndex(RandomPostingsTester.java:680)
        at 
org.apache.lucene.index.RandomPostingsTester.testFull(RandomPostingsTester.java:1253)
        at 
org.apache.lucene.index.BasePostingsFormatTestCase.testDocsAndFreqsAndPositionsAndPayloads(BasePostingsFormatTestCase.java:114)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:880)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:781)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:816)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:827)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at java.lang.Thread.run(Thread.java:804)
Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
        ... 47 more


FAILED:  org.apache.lucene.codecs.perfield.TestPerFieldPostingsFormat.testRandom

Error Message:
Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.codecs.perfield.TestPerFieldPostingsFormat_370E8FD08B184AD3-001/testPostingsFormat-002/_0_TestBloomFilteredLucenePostings_0.blm")

Stack Trace:
java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.codecs.perfield.TestPerFieldPostingsFormat_370E8FD08B184AD3-001/testPostingsFormat-002/_0_TestBloomFilteredLucenePostings_0.blm")
        at 
__randomizedtesting.SeedInfo.seed([370E8FD08B184AD3:4542AADF3A78FCA0]:0)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
        at 
org.apache.lucene.store.Directory.openChecksumInput(Directory.java:113)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1055)
        at 
org.apache.lucene.codecs.bloom.BloomFilteringPostingsFormat$BloomFilteredFieldsProducer.<init>(BloomFilteringPostingsFormat.java:165)
        at 
org.apache.lucene.codecs.bloom.BloomFilteringPostingsFormat.fieldsProducer(BloomFilteringPostingsFormat.java:150)
        at 
org.apache.lucene.codecs.bloom.TestBloomFilteredLucenePostings.fieldsProducer(TestBloomFilteredLucenePostings.java:71)
        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsReader.<init>(PerFieldPostingsFormat.java:261)
        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat.fieldsProducer(PerFieldPostingsFormat.java:341)
        at 
org.apache.lucene.index.RandomPostingsTester.buildIndex(RandomPostingsTester.java:680)
        at 
org.apache.lucene.index.BasePostingsFormatTestCase.testRandom(BasePostingsFormatTestCase.java:135)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:880)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:781)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:816)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:827)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at java.lang.Thread.run(Thread.java:804)
Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
        ... 49 more


FAILED:  org.apache.lucene.index.TestBagOfPositions.test

Error Message:
this IndexWriter is closed

Stack Trace:
org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
        at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:724)
        at org.apache.lucene.index.IndexWriter.getConfig(IndexWriter.java:1047)
        at 
org.apache.lucene.index.RandomIndexWriter.forceMerge(RandomIndexWriter.java:420)
        at 
org.apache.lucene.index.TestBagOfPositions.test(TestBagOfPositions.java:133)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:880)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:781)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:816)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:827)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at java.lang.Thread.run(Thread.java:804)
Caused by: java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestBagOfPositions_370E8FD08B184AD3-001/bagofpositions-001/_0_FSTOrd50_0.doc")
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.codecs.lucene50.Lucene50CompoundFormat.write(Lucene50CompoundFormat.java:90)
        at 
org.apache.lucene.index.IndexWriter.createCompoundFile(IndexWriter.java:4680)
        at 
org.apache.lucene.index.DocumentsWriterPerThread.sealFlushedSegment(DocumentsWriterPerThread.java:496)
        at 
org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:460)
        at 
org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:502)
        at 
org.apache.lucene.index.DocumentsWriter.postUpdate(DocumentsWriter.java:376)
        at 
org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:466)
        at 
org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1492)
        at 
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1271)
        at 
org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:170)
        at 
org.apache.lucene.index.TestBagOfPositions$1.run(TestBagOfPositions.java:119)
Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
        ... 18 more


FAILED:  org.apache.lucene.index.TestBagOfPostings.test

Error Message:
this IndexWriter is closed

Stack Trace:
org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
        at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:724)
        at org.apache.lucene.index.IndexWriter.getConfig(IndexWriter.java:1047)
        at 
org.apache.lucene.index.RandomIndexWriter.forceMerge(RandomIndexWriter.java:420)
        at 
org.apache.lucene.index.TestBagOfPostings.test(TestBagOfPostings.java:125)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:880)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:781)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:816)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:827)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at java.lang.Thread.run(Thread.java:804)
Caused by: java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestBagOfPostings_370E8FD08B184AD3-001/bagofpostings-001/_1_BlockTreeOrds_0.tipo")
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.codecs.lucene50.Lucene50CompoundFormat.write(Lucene50CompoundFormat.java:90)
        at 
org.apache.lucene.index.IndexWriter.createCompoundFile(IndexWriter.java:4680)
        at 
org.apache.lucene.index.DocumentsWriterPerThread.sealFlushedSegment(DocumentsWriterPerThread.java:496)
        at 
org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:460)
        at 
org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:502)
        at 
org.apache.lucene.index.DocumentsWriter.postUpdate(DocumentsWriter.java:376)
        at 
org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:466)
        at 
org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1492)
        at 
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1271)
        at 
org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:170)
        at 
org.apache.lucene.index.TestBagOfPostings$1.run(TestBagOfPostings.java:111)
Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
        ... 18 more


FAILED:  org.apache.lucene.index.TestConsistentFieldNumbers.testFieldNumberGaps

Error Message:
Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestConsistentFieldNumbers_370E8FD08B184AD3-001/index-MMapDirectory-001/_0.si")

Stack Trace:
java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestConsistentFieldNumbers_370E8FD08B184AD3-001/index-MMapDirectory-001/_0.si")
        at 
__randomizedtesting.SeedInfo.seed([370E8FD08B184AD3:639D36FAF741163D]:0)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.index.IndexWriter.slowFileExists(IndexWriter.java:4814)
        at org.apache.lucene.index.IndexWriter.filesExist(IndexWriter.java:4351)
        at 
org.apache.lucene.index.IndexWriter.startCommit(IndexWriter.java:4422)
        at 
org.apache.lucene.index.IndexWriter.prepareCommitInternal(IndexWriter.java:2876)
        at 
org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:2989)
        at org.apache.lucene.index.IndexWriter.shutdown(IndexWriter.java:1086)
        at org.apache.lucene.index.IndexWriter.close(IndexWriter.java:1129)
        at 
org.apache.lucene.index.TestConsistentFieldNumbers.testFieldNumberGaps(TestConsistentFieldNumbers.java:160)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:880)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:781)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:816)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:827)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at java.lang.Thread.run(Thread.java:804)
Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
        ... 49 more


FAILED:  
org.apache.lucene.index.TestCrashCausesCorruptIndex.testCrashCorruptsIndexing

Error Message:
Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestCrashCausesCorruptIndex_370E8FD08B184AD3-001/testCrashCorruptsIndexing-001/_0.si")

Stack Trace:
java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestCrashCausesCorruptIndex_370E8FD08B184AD3-001/testCrashCorruptsIndexing-001/_0.si")
        at 
__randomizedtesting.SeedInfo.seed([370E8FD08B184AD3:40891FE1C9298A38]:0)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.index.IndexWriter.slowFileExists(IndexWriter.java:4814)
        at org.apache.lucene.index.IndexWriter.filesExist(IndexWriter.java:4351)
        at 
org.apache.lucene.index.IndexWriter.startCommit(IndexWriter.java:4422)
        at 
org.apache.lucene.index.IndexWriter.prepareCommitInternal(IndexWriter.java:2876)
        at 
org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:2989)
        at org.apache.lucene.index.IndexWriter.commit(IndexWriter.java:2956)
        at 
org.apache.lucene.index.TestCrashCausesCorruptIndex.indexAndCrashOnCreateOutputSegments2(TestCrashCausesCorruptIndex.java:71)
        at 
org.apache.lucene.index.TestCrashCausesCorruptIndex.testCrashCorruptsIndexing(TestCrashCausesCorruptIndex.java:46)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:880)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:781)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:816)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:827)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at java.lang.Thread.run(Thread.java:804)
Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
        ... 46 more


FAILED:  org.apache.lucene.index.TestDemoParallelLeafReader.testRandom

Error Message:
java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDemoParallelLeafReader_370E8FD08B184AD3-001/tempDir-001/segs/4a3gw4zhahoql3u9cggui0ien_0/_0.dii")

Stack Trace:
java.lang.RuntimeException: java.io.IOException: Unable to unmap the mapped 
buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDemoParallelLeafReader_370E8FD08B184AD3-001/tempDir-001/segs/4a3gw4zhahoql3u9cggui0ien_0/_0.dii")
        at 
__randomizedtesting.SeedInfo.seed([370E8FD08B184AD3:4542AADF3A78FCA0]:0)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ParallelLeafDirectoryReader$1.wrap(TestDemoParallelLeafReader.java:202)
        at 
org.apache.lucene.index.FilterDirectoryReader$SubReaderWrapper.wrap(FilterDirectoryReader.java:56)
        at 
org.apache.lucene.index.FilterDirectoryReader$SubReaderWrapper.access$000(FilterDirectoryReader.java:51)
        at 
org.apache.lucene.index.FilterDirectoryReader.<init>(FilterDirectoryReader.java:83)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ParallelLeafDirectoryReader.<init>(TestDemoParallelLeafReader.java:194)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ParallelLeafDirectoryReader.doWrapDirectoryReader(TestDemoParallelLeafReader.java:210)
        at 
org.apache.lucene.index.FilterDirectoryReader.wrapDirectoryReader(FilterDirectoryReader.java:99)
        at 
org.apache.lucene.index.FilterDirectoryReader.doOpenIfChanged(FilterDirectoryReader.java:104)
        at 
org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:140)
        at 
org.apache.lucene.index.ReaderManager.refreshIfNeeded(ReaderManager.java:105)
        at 
org.apache.lucene.index.ReaderManager.refreshIfNeeded(ReaderManager.java:36)
        at 
org.apache.lucene.search.ReferenceManager.doMaybeRefresh(ReferenceManager.java:176)
        at 
org.apache.lucene.search.ReferenceManager.maybeRefresh(ReferenceManager.java:225)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader.testRandom(TestDemoParallelLeafReader.java:1256)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:880)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:781)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:816)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:827)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at java.lang.Thread.run(Thread.java:804)
Caused by: java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDemoParallelLeafReader_370E8FD08B184AD3-001/tempDir-001/segs/4a3gw4zhahoql3u9cggui0ien_0/_0.dii")
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.index.IndexWriter.slowFileExists(IndexWriter.java:4814)
        at org.apache.lucene.index.IndexWriter.filesExist(IndexWriter.java:4351)
        at 
org.apache.lucene.index.IndexWriter.startCommit(IndexWriter.java:4422)
        at 
org.apache.lucene.index.IndexWriter.prepareCommitInternal(IndexWriter.java:2876)
        at 
org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:2989)
        at org.apache.lucene.index.IndexWriter.shutdown(IndexWriter.java:1086)
        at org.apache.lucene.index.IndexWriter.close(IndexWriter.java:1129)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader$1.reindex(TestDemoParallelLeafReader.java:689)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:395)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ParallelLeafDirectoryReader$1.wrap(TestDemoParallelLeafReader.java:199)
        ... 49 more
Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
        ... 65 more


FAILED:  
org.apache.lucene.index.TestDemoParallelLeafReader.testRandomMultipleSchemaGensSameField

Error Message:
java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDemoParallelLeafReader_370E8FD08B184AD3-001/tempDir-002/segs/4a3gw4zhahoql3u9cggui0iez_1/_0.dii")

Stack Trace:
java.lang.RuntimeException: java.io.IOException: Unable to unmap the mapped 
buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDemoParallelLeafReader_370E8FD08B184AD3-001/tempDir-002/segs/4a3gw4zhahoql3u9cggui0iez_1/_0.dii")
        at 
__randomizedtesting.SeedInfo.seed([370E8FD08B184AD3:675F84117CEE1BCA]:0)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ParallelLeafDirectoryReader$1.wrap(TestDemoParallelLeafReader.java:202)
        at 
org.apache.lucene.index.FilterDirectoryReader$SubReaderWrapper.wrap(FilterDirectoryReader.java:56)
        at 
org.apache.lucene.index.FilterDirectoryReader$SubReaderWrapper.access$000(FilterDirectoryReader.java:51)
        at 
org.apache.lucene.index.FilterDirectoryReader.<init>(FilterDirectoryReader.java:83)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ParallelLeafDirectoryReader.<init>(TestDemoParallelLeafReader.java:194)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ParallelLeafDirectoryReader.doWrapDirectoryReader(TestDemoParallelLeafReader.java:210)
        at 
org.apache.lucene.index.FilterDirectoryReader.wrapDirectoryReader(FilterDirectoryReader.java:99)
        at 
org.apache.lucene.index.FilterDirectoryReader.doOpenIfChanged(FilterDirectoryReader.java:104)
        at 
org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:140)
        at 
org.apache.lucene.index.ReaderManager.refreshIfNeeded(ReaderManager.java:105)
        at 
org.apache.lucene.index.ReaderManager.refreshIfNeeded(ReaderManager.java:36)
        at 
org.apache.lucene.search.ReferenceManager.doMaybeRefresh(ReferenceManager.java:176)
        at 
org.apache.lucene.search.ReferenceManager.maybeRefresh(ReferenceManager.java:225)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader.testRandomMultipleSchemaGensSameField(TestDemoParallelLeafReader.java:1081)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:880)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:781)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:816)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:827)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at java.lang.Thread.run(Thread.java:804)
Caused by: java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDemoParallelLeafReader_370E8FD08B184AD3-001/tempDir-002/segs/4a3gw4zhahoql3u9cggui0iez_1/_0.dii")
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.index.IndexWriter.slowFileExists(IndexWriter.java:4814)
        at org.apache.lucene.index.IndexWriter.filesExist(IndexWriter.java:4351)
        at 
org.apache.lucene.index.IndexWriter.startCommit(IndexWriter.java:4422)
        at 
org.apache.lucene.index.IndexWriter.prepareCommitInternal(IndexWriter.java:2876)
        at 
org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:2989)
        at org.apache.lucene.index.IndexWriter.shutdown(IndexWriter.java:1086)
        at org.apache.lucene.index.IndexWriter.close(IndexWriter.java:1129)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:852)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:395)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ParallelLeafDirectoryReader$1.wrap(TestDemoParallelLeafReader.java:199)
        ... 49 more
Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
        ... 65 more


FAILED:  
org.apache.lucene.index.TestDemoParallelLeafReader.testRandomMultipleSchemaGens

Error Message:
Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDemoParallelLeafReader_370E8FD08B184AD3-001/tempDir-004/index/_0.pos")

Stack Trace:
java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDemoParallelLeafReader_370E8FD08B184AD3-001/tempDir-004/index/_0.pos")
        at 
__randomizedtesting.SeedInfo.seed([370E8FD08B184AD3:2ACC225C94E1940F]:0)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.codecs.lucene50.Lucene50CompoundFormat.write(Lucene50CompoundFormat.java:90)
        at 
org.apache.lucene.index.IndexWriter.createCompoundFile(IndexWriter.java:4680)
        at 
org.apache.lucene.index.DocumentsWriterPerThread.sealFlushedSegment(DocumentsWriterPerThread.java:496)
        at 
org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:460)
        at 
org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:502)
        at 
org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:614)
        at org.apache.lucene.index.IndexWriter.getReader(IndexWriter.java:428)
        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenFromWriter(StandardDirectoryReader.java:291)
        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:266)
        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:256)
        at 
org.apache.lucene.index.FilterDirectoryReader.doOpenIfChanged(FilterDirectoryReader.java:104)
        at 
org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:140)
        at 
org.apache.lucene.index.ReaderManager.refreshIfNeeded(ReaderManager.java:105)
        at 
org.apache.lucene.index.ReaderManager.refreshIfNeeded(ReaderManager.java:36)
        at 
org.apache.lucene.search.ReferenceManager.doMaybeRefresh(ReferenceManager.java:176)
        at 
org.apache.lucene.search.ReferenceManager.maybeRefresh(ReferenceManager.java:225)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader.testRandomMultipleSchemaGens(TestDemoParallelLeafReader.java:994)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:880)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:781)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:816)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:827)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at java.lang.Thread.run(Thread.java:804)
Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
        ... 60 more


FAILED:  org.apache.lucene.index.TestDemoParallelLeafReader.testBasic

Error Message:
Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDemoParallelLeafReader_370E8FD08B184AD3-001/tempDir-005/index/_0.pos")

Stack Trace:
java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDemoParallelLeafReader_370E8FD08B184AD3-001/tempDir-005/index/_0.pos")
        at 
__randomizedtesting.SeedInfo.seed([370E8FD08B184AD3:9CF492C554C4CCFD]:0)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.codecs.lucene50.Lucene50CompoundFormat.write(Lucene50CompoundFormat.java:90)
        at 
org.apache.lucene.index.IndexWriter.createCompoundFile(IndexWriter.java:4680)
        at 
org.apache.lucene.index.DocumentsWriterPerThread.sealFlushedSegment(DocumentsWriterPerThread.java:496)
        at 
org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:460)
        at 
org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:502)
        at 
org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:614)
        at org.apache.lucene.index.IndexWriter.getReader(IndexWriter.java:428)
        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenFromWriter(StandardDirectoryReader.java:291)
        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:266)
        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:256)
        at 
org.apache.lucene.index.FilterDirectoryReader.doOpenIfChanged(FilterDirectoryReader.java:104)
        at 
org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:140)
        at 
org.apache.lucene.index.ReaderManager.refreshIfNeeded(ReaderManager.java:105)
        at 
org.apache.lucene.index.ReaderManager.refreshIfNeeded(ReaderManager.java:36)
        at 
org.apache.lucene.search.ReferenceManager.doMaybeRefresh(ReferenceManager.java:176)
        at 
org.apache.lucene.search.ReferenceManager.maybeRefresh(ReferenceManager.java:225)
        at 
org.apache.lucene.index.TestDemoParallelLeafReader.testBasic(TestDemoParallelLeafReader.java:1163)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:880)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:781)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:816)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:827)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at java.lang.Thread.run(Thread.java:804)
Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
        ... 60 more


FAILED:  org.apache.lucene.index.TestDoc.testIndexAndMerge

Error Message:
Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDoc_370E8FD08B184AD3-001/testIndex-001/_0.si")

Stack Trace:
java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDoc_370E8FD08B184AD3-001/testIndex-001/_0.si")
        at 
__randomizedtesting.SeedInfo.seed([370E8FD08B184AD3:5E541B8B25E483E6]:0)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.index.IndexWriter.slowFileExists(IndexWriter.java:4814)
        at org.apache.lucene.index.IndexWriter.filesExist(IndexWriter.java:4351)
        at 
org.apache.lucene.index.IndexWriter.startCommit(IndexWriter.java:4422)
        at 
org.apache.lucene.index.IndexWriter.prepareCommitInternal(IndexWriter.java:2876)
        at 
org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:2989)
        at org.apache.lucene.index.IndexWriter.commit(IndexWriter.java:2956)
        at org.apache.lucene.index.TestDoc.indexDoc(TestDoc.java:207)
        at org.apache.lucene.index.TestDoc.testIndexAndMerge(TestDoc.java:133)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:880)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:781)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:816)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:827)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
        at java.lang.Thread.run(Thread.java:804)
Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
        ... 49 more


FAILED:  org.apache.lucene.index.TestDuelingCodecs.testEquals

Error Message:
Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDuelingCodecs_370E8FD08B184AD3-001/leftDir-002/_0.dat")

Stack Trace:
java.io.IOException: Unable to unmap the mapped buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDuelingCodecs_370E8FD08B184AD3-001/leftDir-002/_0.dat")
        at 
__randomizedtesting.SeedInfo.seed([370E8FD08B184AD3:3361DC4B45211AD1]:0)
        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
        at 
org.apache.lucene.codecs.simpletext.SimpleTextCompoundFormat.write(SimpleTextCompoundFormat.java:182)
        at 
org.apache.lucene.index.IndexWriter.createCompoundFile(IndexWriter.java:4680)
        at 
org.apache.lucene.index.DocumentsWriterPerThread.sealFlushedSegment(DocumentsWriterPerThread.java:496)
        at 
org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:460)
        at 
org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:502)
        at 
org.apache.lucene.index.DocumentsWriter.postUpdate(DocumentsWriter.java:376)
        at 
org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:466)
        at 
org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1492)
        at 
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1271)
        at 
org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:170)
        at 
org.apache.lucene.index.TestDuelingCodecs.createRandomIndex(TestDuelingCodecs.java:139)
        at 
org.apache.lucene.index.TestDuelingCodecs.testEquals(TestDuelingCodecs.java:151)
        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:520)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1764)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:871)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:921)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRun

[...truncated too long message...]

andomMultipleSchemaGens(TestDemoParallelLeafReader.java:994)
   [junit4]    >        at java.lang.Thread.run(Thread.java:804)
   [junit4]    > Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
   [junit4]    >        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
   [junit4]    >        at java.security.AccessController.doPrivileged(Native 
Method)
   [junit4]    >        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
   [junit4]    >        ... 60 more
   [junit4]   2> NOTE: reproduce with: ant test  
-Dtestcase=TestDemoParallelLeafReader -Dtests.method=testBasic 
-Dtests.seed=370E8FD08B184AD3 -Dtests.multiplier=3 -Dtests.slow=true 
-Dtests.locale=et -Dtests.timezone=SystemV/EST5EDT -Dtests.asserts=true 
-Dtests.file.encoding=ISO-8859-1
   [junit4] ERROR   0.01s J0 | TestDemoParallelLeafReader.testBasic <<<
   [junit4]    > Throwable #1: java.io.IOException: Unable to unmap the mapped 
buffer: 
MMapIndexInput(path="/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDemoParallelLeafReader_370E8FD08B184AD3-001/tempDir-005/index/_0.pos")
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([370E8FD08B184AD3:9CF492C554C4CCFD]:0)
   [junit4]    >        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:384)
   [junit4]    >        at 
org.apache.lucene.store.ByteBufferIndexInput.freeBuffer(ByteBufferIndexInput.java:376)
   [junit4]    >        at 
org.apache.lucene.store.ByteBufferIndexInput.close(ByteBufferIndexInput.java:355)
   [junit4]    >        at 
org.apache.lucene.util.LuceneTestCase.slowFileExists(LuceneTestCase.java:2695)
   [junit4]    >        at 
org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:732)
   [junit4]    >        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
   [junit4]    >        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
   [junit4]    >        at 
org.apache.lucene.store.FilterDirectory.openInput(FilterDirectory.java:94)
   [junit4]    >        at 
org.apache.lucene.codecs.lucene50.Lucene50CompoundFormat.write(Lucene50CompoundFormat.java:90)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.createCompoundFile(IndexWriter.java:4680)
   [junit4]    >        at 
org.apache.lucene.index.DocumentsWriterPerThread.sealFlushedSegment(DocumentsWriterPerThread.java:496)
   [junit4]    >        at 
org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:460)
   [junit4]    >        at 
org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:502)
   [junit4]    >        at 
org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:614)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.getReader(IndexWriter.java:428)
   [junit4]    >        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenFromWriter(StandardDirectoryReader.java:291)
   [junit4]    >        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:266)
   [junit4]    >        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:256)
   [junit4]    >        at 
org.apache.lucene.index.FilterDirectoryReader.doOpenIfChanged(FilterDirectoryReader.java:104)
   [junit4]    >        at 
org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:140)
   [junit4]    >        at 
org.apache.lucene.index.ReaderManager.refreshIfNeeded(ReaderManager.java:105)
   [junit4]    >        at 
org.apache.lucene.index.ReaderManager.refreshIfNeeded(ReaderManager.java:36)
   [junit4]    >        at 
org.apache.lucene.search.ReferenceManager.doMaybeRefresh(ReferenceManager.java:176)
   [junit4]    >        at 
org.apache.lucene.search.ReferenceManager.maybeRefresh(ReferenceManager.java:225)
   [junit4]    >        at 
org.apache.lucene.index.TestDemoParallelLeafReader.testBasic(TestDemoParallelLeafReader.java:1163)
   [junit4]    >        at java.lang.Thread.run(Thread.java:804)
   [junit4]    > Caused by: java.lang.IncompatibleClassChangeError: Found class 
jdk.internal.ref.Cleaner, but interface was expected
   [junit4]    >        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$0(MMapDirectory.java:377)
   [junit4]    >        at java.security.AccessController.doPrivileged(Native 
Method)
   [junit4]    >        at 
org.apache.lucene.store.MMapDirectory.lambda$unmapHackImpl$1(MMapDirectory.java:375)
   [junit4]    >        ... 60 more
   [junit4]   2> NOTE: leaving temporary files on disk at: 
/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build/core/test/J0/temp/lucene.index.TestDemoParallelLeafReader_370E8FD08B184AD3-001
   [junit4]   2> NOTE: test params are: codec=CheapBastard, 
sim=RandomSimilarity(queryNorm=true,coord=yes): {text=DFR I(ne)1}, locale=et, 
timezone=SystemV/EST5EDT
   [junit4]   2> NOTE: Linux 3.19.0-51-generic amd64/Oracle Corporation 9-ea 
(64-bit)/cpus=12,threads=1,free=171202800,total=515899392
   [junit4]   2> NOTE: All tests run in this JVM: [TestTermScorer, 
TestQueryCachingPolicy, TestSimilarity2, TestReadOnlyIndex, TestIndexWriter, 
TestBlendedTermQuery, TestIndexSearcher, TestFilterIterator, 
TestBooleanMinShouldMatch, TestCrash, TestToken, TestMaxPosition, 
TestOfflineSorter, TestNumericDocValuesUpdates, TestNewestSegment, 
TestTimSorterWorstCase, TestPersistentSnapshotDeletionPolicy, TestBytesRef, 
TestUnicodeUtil, TestUpgradeIndexMergePolicy, TestFilterLeafReader, 
TestSimilarityProvider, TestMergedIterator, TestTrackingDirectoryWrapper, 
TestRegexpRandom, TestFilterDirectory, TestDocInverterPerFieldErrorInfo, 
TestMultiset, TestMinShouldMatch2, TestDocValuesRewriteMethod, 
TestMultiDocValues, TestSearcherManager, TestBM25Similarity, 
TestTimeLimitingCollector, TestLockFactory, TestPerSegmentDeletes, 
TestIndexWriterExceptions2, TestSentinelIntSet, TestSortRandom, Test2BTerms, 
TestReusableStringReader, TestDateSort, TestTermRangeQuery, TestFieldType, 
TestUTF32ToUTF8, TestIndexWriterUnicode, TestInfoStream, TestMultiFields, 
TestBooleanQueryVisitSubscorers, TestFixedBitSet, TestDeletionPolicy, 
TestDeterminizeLexicon, TestCodecs, TestIndexWriterDelete, TestTerms, 
TestExceedMaxTermLength, TestSloppyPhraseQuery2, TestCharFilter, 
TestConstantScoreQuery, TestParallelCompositeReader, TestNoDeletionPolicy, 
TestCloseableThreadLocal, TestDirectPacked, TestSubScorerFreqs, 
TestThreadedForceMerge, TestReaderClosed, TestDocCount, Test4GBStoredFields, 
TestFSTs, TestPackedInts, TestShardSearching, TestIndexWriterMergePolicy, 
TestDuelingCodecs, TestStressAdvance, TestNorms, TestIndexWriterCommit, 
TestSearchWithThreads, TestNeverDelete, TestTopDocsMerge, TestLongPostings, 
TestStressIndexing, TestNRTReaderWithThreads, TestIndexWriterForceMerge, 
TestPerFieldPostingsFormat, TestConsistentFieldNumbers, TestWeakIdentityMap, 
TestSimpleExplanations, TestSegmentMerger, TestPhraseQuery, TestCollectionUtil, 
TestBagOfPositions, TestRegexpRandom2, TestSegmentReader, TestPagedBytes, 
TestTransactions, TestSegmentTermDocs, TestSort, TestFieldsReader, 
TestCustomSearcherSort, TestDocValuesIndexing, TestSimilarityBase, 
TestTermsEnum2, TestIndexWriterOnDiskFull, TestSpans, TestCustomNorms, 
TestPostingsOffsets, TestMixedCodecs, TestTransactionRollback, TestFlex, 
TestRAMDirectory, TestMultiPhraseQuery, TestLazyProxSkipping, TestDeterminism, 
TestDocsAndPositions, TestMergeSchedulerExternal, TestBagOfPostings, 
TestTermVectorsWriter, TestCharTermAttributeImpl, TestBytesRefHash, 
TestIndexInput, TestDisjunctionMaxQuery, TestCrashCausesCorruptIndex, 
TestScorerPerf, TestMultiTermConstantScore, TestLiveFieldValues, 
TestForTooMuchCloning, TestSpanSearchEquivalence, TestFuzzyQuery, TestDoc, 
TestExternalCodecs, TestSimpleExplanationsOfNonMatches, TestRegexpQuery, 
TestMultiValuedNumericRangeQuery, TestIntBlockPool, TestTopDocsCollector, 
TestUniqueTermCount, TestComplexExplanationsOfNonMatches, TestAutomatonQuery, 
TestDocument, TestMaxTermFrequency, TestFileSwitchDirectory, TestSumDocFreq, 
TestIndexableField, TestDocValuesScoring, TestCheckIndex, 
TestPayloadsOnVectors, TestSpanMultiTermQueryWrapper, 
TestSizeBoundedForceMerge, TestPrefixQuery, TestElevationComparator, 
TestBinaryTerms, TestIndexWriterConfig, TestMultiTermQueryRewrites, 
TestSpanExplanationsOfNonMatches, TestRollingBuffer, TestSearch, TestDateTools, 
TestCachingCollector, TestRecyclingByteBlockAllocator, TestSpanFirstQuery, 
TestNoMergePolicy, TestIndexWriterLockRelease, TestIndexWriterOnJRECrash, 
TestNGramPhraseQuery, TestTermdocPerf, TestIndexCommit, Test2BPostingsBytes, 
Test2BNumericDocValues, TestBytesRefAttImpl, TestBlockPostingsFormat2, 
TestBlockPostingsFormat3, TestLucene50CompoundFormat, 
TestLucene50SegmentInfoFormat, TestLucene50StoredFieldsFormat, 
TestLucene50TermVectorsFormat, TestLucene60PointFormat, TestCodecUtil, 
TestDemoParallelLeafReader]
   [junit4] Completed [352/412 (19!)] on J0 in 0.16s, 5 tests, 4 errors <<< 
FAILURES!

[...truncated 229 lines...]
BUILD FAILED
/home/jenkins/workspace/Lucene-Solr-6.x-Linux/build.xml:740: The following 
error occurred while executing this line:
/home/jenkins/workspace/Lucene-Solr-6.x-Linux/build.xml:684: The following 
error occurred while executing this line:
/home/jenkins/workspace/Lucene-Solr-6.x-Linux/build.xml:59: The following error 
occurred while executing this line:
/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/build.xml:50: The 
following error occurred while executing this line:
/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/common-build.xml:1457: The 
following error occurred while executing this line:
/home/jenkins/workspace/Lucene-Solr-6.x-Linux/lucene/common-build.xml:1014: 
There were test failures: 412 suites (1 ignored), 3446 tests, 25 errors, 65 
ignored (61 assumptions) [seed: 370E8FD08B184AD3]

Total time: 13 minutes 39 seconds
Build step 'Invoke Ant' marked build as failure
Archiving artifacts
[WARNINGS] Skipping publisher since build result is FAILURE
Recording test results
Email was triggered for: Failure - Any
Sending email for trigger: Failure - Any



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