Some of the tests mentioned below failing with the reason of
java.lang.NoSuchMethodError: java.util.HashMap.roundUpToPowerOf2
AND
java.lang.IllegalStateException: unread block data

Tests failing
-----------------
api/java_util/serialization/descriptions.html#HashSet
api/javax_print/attribute/standard/JobStateReasons/serial/index.html#Input
api/javax_management/jmx_serial/openmbean/OpenMBeanParameterInfoSupport/serial/index.html#Input
api/java_awt/TextArea/AccessibleAWTTextArea/serial/index.html#Constructor
api/java_awt/TextComponent/AccessibleAWTTextComponent/serial/index.html#Constructor
api/java_awt/TextArea/AccessibleAWTTextArea/serial/index.html#Input
api/java_awt/TextComponent/AccessibleAWTTextComponent/serial/index.html#Input
api/java_awt/serialization/descriptions.html#Component
api/java_awt/serialization/descriptions.html#Container
api/java_awt/serialization/descriptions.html#TextArea
api/java_awt/serialization/descriptions.html#TextComponent
api/javax_management/remote/security/index.html#RmiIiopMBeanServerForwarderTest
api/javax_management/remote/security/index.html#RmiJrmpMBeanServerForwarderTest
api/javax_management/remote/protocol/RmiMBeanServerRequestTest.html#RmiMBeanServerRequestTest
api/javax_management/remote/security/index.html#RmiIiopMBeanServerConnectionTest
api/javax_management/remote/security/index.html#RmiJrmpMBeanServerConnectionTest
api/javax_management/remote/loading/index.html#RmiIiopServerDefaultClassLoaderTest
api/javax_management/remote/loading/index.html#RmiJrmpServerDefaultClassLoaderTest
api/javax_management/remote/security/index.html#RmiIiopSubjectDelegationTest
api/javax_management/remote/security/index.html#RmiJrmpSubjectDelegationTest
api/javax_management/remote/rmi/RMIConnection/index.html#RMIConnectionTest

Reproduced with the below piece of code:
-------------------------------------------------------

HashSet hashSet = new HashSet();
        hashSet.add("krishna");

        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        try {
            ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);
            objectOutputStream.writeObject(hashSet);
            ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArrayOutputStream.toByteArray());
            ObjectInputStream objin = new ObjectInputStream(byteArrayInputStream);
            System.out.println("the objin "+objin);
            try {
                objin.readObject();
                System.out.println("After readObject");

            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

NOTE : The tests are failing only in "AggressiveOpt" mode.