JBoss EAP6 throws ClassNotFoundException: HttpServletRequest at deployment

Issue

• while deploying application JBoss EAP6 throws the following Exception:

17:28:02,851 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-6) MSC000001: Failed to start service jboss.deployment.unit."AntBasedServlet.war".POST_MODULE: org.jboss.msc.service.StartException in service jboss.deployment.unit."AntBasedServlet.war".POST_MODULE: JBAS018733: Failed to process phase POST_MODULE of deployment "AntBasedServlet.war"
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:127) [jboss-as-server-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_21]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_21]
    at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_21]
Caused by: java.lang.RuntimeException: JBAS018757: Error getting reflective information for class servlets.FirstServlet with ClassLoader ModuleClassLoader for Module "deployment.AntBasedServlet.war:main" from Service Module Loader
    at org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex.getClassIndex(DeploymentReflectionIndex.java:72) [jboss-as-server-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
    at org.jboss.as.ee.metadata.MethodAnnotationAggregator.runtimeAnnotationInformation(MethodAnnotationAggregator.java:58)
    at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.handleAnnotations(InterceptorAnnotationProcessor.java:107)
    at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.processComponentConfig(InterceptorAnnotationProcessor.java:92)
    at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.deploy(InterceptorAnnotationProcessor.java:77)
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:120) [jboss-as-server-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
    ... 5 more
Caused by: java.lang.NoClassDefFoundError: HttpServletRequest
    at java.lang.Class.getDeclaredMethods0(Native Method) [rt.jar:1.7.0_21]
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2451) [rt.jar:1.7.0_21]
    at java.lang.Class.getDeclaredMethods(Class.java:1810) [rt.jar:1.7.0_21]
    at org.jboss.as.server.deployment.reflect.ClassReflectionIndex.<init>(ClassReflectionIndex.java:65) [jboss-as-server-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
    at org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex.getClassIndex(DeploymentReflectionIndex.java:68) [jboss-as-server-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
    ... 10 more
Caused by: java.lang.ClassNotFoundException: HttpServletRequest.HttpServletRequest from [Module "deployment.AntBasedServlet.war:main" from Service Module Loader]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:196) [jboss-modules.jar:1.2.0.Final-redhat-1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:444) [jboss-modules.jar:1.2.0.Final-redhat-1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:432) [jboss-modules.jar:1.2.0.Final-redhat-1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:374) [jboss-modules.jar:1.2.0.Final-redhat-1]
    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:119) [jboss-modules.jar:1.2.0.Final-redhat-1]
    ... 15 more

17:28:02,862 ERROR [org.jboss.as.server] (DeploymentScanner-threads - 1) JBAS015870: Deploy of deployment "AntBasedServlet.war" was rolled back with the following failure message: 
{"JBAS014671: Failed services" => {"jboss.deployment.unit.\"AntBasedServlet.war\".POST_MODULE" => "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"AntBasedServlet.war\".POST_MODULE: JBAS018733: Failed to process phase POST_MODULE of deployment \"AntBasedServlet.war\"
    Caused by: java.lang.RuntimeException: JBAS018757: Error getting reflective information for class servlets.FirstServlet with ClassLoader ModuleClassLoader for Module \"deployment.AntBasedServlet.war:main\" from Service Module Loader
    Caused by: java.lang.NoClassDefFoundError: HttpServletRequest
    Caused by: java.lang.ClassNotFoundException: HttpServletRequest.HttpServletRequest from [Module \"deployment.AntBasedServlet.war:main\" from Service Module Loader]"}}