Buffer leak errors when ServletOutputStream tests fail

ava.lang.RuntimeException: Buffer Leak io.undertow.servlet.test.streams.ServletOutputStreamSSLTestCase.testAsyncServletOutputStreamOffIOThread[proxy][ajp]
	at io.undertow.testutils.DefaultServer$1.testFinished(DefaultServer.java:402)
	at org.junit.runner.notification.SynchronizedRunListener.testFinished(SynchronizedRunListener.java:87)
	at org.junit.runner.notification.RunNotifier$9.notifyListener(RunNotifier.java:225)
	at org.junit.runner.notification.RunNotifier$SafeNotifier.run(RunNotifier.java:72)
	at org.junit.runner.notification.RunNotifier.fireTestFinished(RunNotifier.java:222)
	at org.junit.internal.runners.model.EachTestNotifier.fireTestFinished(EachTestNotifier.java:38)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:372)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
	at io.undertow.testutils.DefaultServer.runChild(DefaultServer.java:652)
	at io.undertow.testutils.DefaultServer.runChild(DefaultServer.java:145)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at io.undertow.testutils.RunDefaultServer.evaluate(RunDefaultServer.java:74)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at io.undertow.testutils.DefaultServer.run(DefaultServer.java:376)
	at org.junit.runners.Suite.runChild(Suite.java:128)
	at org.junit.runners.Suite.runChild(Suite.java:27)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.apache.maven.surefire.junitcore.JUnitCore.run(JUnitCore.java:55)
	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.createRequestAndRun(JUnitCoreWrapper.java:137)
	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.executeEager(JUnitCoreWrapper.java:107)
	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:83)
	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:75)
	at org.apache.maven.surefire.junitcore.JUnitCoreProvider.invoke(JUnitCoreProvider.java:158)
	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:383)
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:344)
	at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:125)
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:417)
Caused by: java.lang.RuntimeException: java.nio.DirectByteBuffer[pos=0 lim=8192 cap=8192] NO: 727282 [NO_CONTEXT]
	at io.undertow.testutils.DebuggingSlicePool$DebuggingBuffer.<init>(DebuggingSlicePool.java:84)
	at io.undertow.testutils.DebuggingSlicePool.allocate(DebuggingSlicePool.java:45)
	at io.undertow.server.protocol.framed.AbstractFramedChannel.allocateReferenceCountedBuffer(AbstractFramedChannel.java:550)
	at io.undertow.server.protocol.framed.AbstractFramedChannel.receive(AbstractFramedChannel.java:364)
	at io.undertow.client.ajp.AjpClientConnection$ClientReceiveListener.handleEvent(AjpClientConnection.java:360)
	at io.undertow.client.ajp.AjpClientConnection$ClientReceiveListener.handleEvent(AjpClientConnection.java:356)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at io.undertow.server.protocol.framed.AbstractFramedChannel$FrameReadListener.handleEvent(AbstractFramedChannel.java:952)
	at io.undertow.server.protocol.framed.AbstractFramedChannel$FrameReadListener.handleEvent(AbstractFramedChannel.java:932)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
	at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:591)