Probable file descriptor leak during testsuite execution

06:34:47 java.lang.NoClassDefFoundError: io/undertow/server/handlers/FixedLengthRequestTestCase$1
06:34:47	at io.undertow.server.handlers.FixedLengthRequestTestCase.setup(FixedLengthRequestTestCase.java:61)
06:34:47	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
06:34:47	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
06:34:47	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
06:34:47	at java.lang.reflect.Method.invoke(Method.java:498)
06:34:47	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
06:34:47	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
06:34:47	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
06:34:47	at org.junit.internal.runners.statements.RunBefores.invokeMethod(RunBefores.java:33)
06:34:47	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
06:34:47	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
06:34:47	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
06:34:47 at io.undertow.testutils.DefaultServer.run(DefaultServer.java:302)
06:34:47	at org.junit.runners.Suite.runChild(Suite.java:128)
06:34:47	at org.junit.runners.Suite.runChild(Suite.java:27)
06:34:47	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
06:34:47	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
06:34:47	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
06:34:47	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
06:34:47	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
06:34:47	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
06:34:47	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
06:34:47	at org.apache.maven.surefire.junitcore.JUnitCore.run(JUnitCore.java:55)
06:34:47	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.createRequestAndRun(JUnitCoreWrapper.java:137)
06:34:47	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.executeEager(JUnitCoreWrapper.java:107)
06:34:47	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:83)
06:34:47	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:75)
06:34:47	at org.apache.maven.surefire.junitcore.JUnitCoreProvider.invoke(JUnitCoreProvider.java:158)
06:34:47	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:383)
06:34:47	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:344)
06:34:47	at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:125)
06:34:47	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:417)
06:34:47 Caused by: java.lang.ClassNotFoundException: io.undertow.server.handlers.FixedLengthRequestTestCase$1
06:34:47	at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
06:34:47 at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
06:34:47	at java.security.AccessController.doPrivileged(Native Method)
06:34:47	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
06:34:47	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
06:34:47	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
06:34:47	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
06:34:47	... 32 more
06:34:47 Caused by: java.io.FileNotFoundException: /store/work/tc-work/b455211ade1ff869/core/target/test-classes/io/undertow/server/handlers/FixedLengthRequestTestCase$1.class (Too many open files)
06:34:47	at java.io.FileInputStream.open0(Native Method)
06:34:47	at java.io.FileInputStream.open(FileInputStream.java:195)
06:34:47	at java.io.FileInputStream.<init>(FileInputStream.java:138)
06:34:47	at sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
06:34:47	at sun.misc.Resource.cachedInputStream(Resource.java:77)
06:34:47	at sun.misc.Resource.getByteBuffer(Resource.java:160)
06:34:47	at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
06:34:47	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
06:34:47	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
06:34:47	... 38 more