Used to work fine until AS6 CR1 (tested in M2 and M4).

Stack trace:

org.jboss.arquillian.impl.event.FiredEventException: java.lang.RuntimeException: Could not inject members
at org.jboss.arquillian.impl.event.MapEventManager.fire(MapEventManager.java:68)
at org.jboss.arquillian.impl.context.AbstractEventContext.fire(AbstractEventContext.java:115)
at org.jboss.arquillian.impl.EventTestRunnerAdaptor.before(EventTestRunnerAdaptor.java:97)
at org.jboss.arquillian.testng.Arquillian.arquillianBeforeTest(Arquillian.java:89)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.testng.internal.MethodHelper.invokeMethod(MethodHelper.java:644)
at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:443)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:160)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:494)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:700)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1002)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:137)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:121)
at org.testng.TestRunner.runWorkers(TestRunner.java:908)
at org.testng.TestRunner.privateRun(TestRunner.java:617)
at org.testng.TestRunner.run(TestRunner.java:498)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:329)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:324)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:296)
at org.testng.SuiteRunner.run(SuiteRunner.java:201)
at org.testng.TestNG.createAndRunSuiteRunners(TestNG.java:915)
at org.testng.TestNG.runSuitesLocally(TestNG.java:879)
at org.testng.TestNG.run(TestNG.java:787)
at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:75)
at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:92)
Caused by: java.lang.RuntimeException: Could not inject members
at org.jboss.arquillian.testenricher.cdi.CDIInjectionEnricher.injectClass(CDIInjectionEnricher.java:103)
at org.jboss.arquillian.testenricher.cdi.CDIInjectionEnricher.enrich(CDIInjectionEnricher.java:52)
at org.jboss.arquillian.impl.handler.TestCaseEnricher.callback(TestCaseEnricher.java:42)
at org.jboss.arquillian.impl.handler.TestCaseEnricher.callback(TestCaseEnricher.java:32)
at org.jboss.arquillian.impl.event.MapEventManager.fire(MapEventManager.java:63)
... 27 more
Caused by: org.jboss.weld.exceptions.DeploymentException: by java.lang.VerifyError: class pl.softwaremill.weldbugs.bug2.org$jboss$weld$bean-1ed4ae51-6ceb-40b2-899a-ed6d1f90409e$jar-ManagedBean-class_pl$softwaremill$weldbugs$bug2$TestBean2_$$_WeldProxy overrides final method someMethod.()V
at org.jboss.weld.bean.ManagedBean.applyInterceptors(ManagedBean.java:569)
at org.jboss.weld.bean.ManagedBean$ManagedBeanInjectionTarget.produce(ManagedBean.java:250)
at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:332)
at org.jboss.weld.context.unbound.DependentContextImpl.get(DependentContextImpl.java:59)
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:669)
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:743)
at org.jboss.weld.injection.FieldInjectionPoint.inject(FieldInjectionPoint.java:137)
at org.jboss.weld.util.Beans.injectBoundFields(Beans.java:869)
at org.jboss.weld.util.Beans.injectFieldsAndInitializers(Beans.java:881)
at org.jboss.weld.manager.SimpleInjectionTarget$1.proceed(SimpleInjectionTarget.java:122)
at org.jboss.weld.injection.InjectionContextImpl.run(InjectionContextImpl.java:54)
at org.jboss.weld.manager.SimpleInjectionTarget.inject(SimpleInjectionTarget.java:116)
at org.jboss.arquillian.testenricher.cdi.CDIInjectionEnricher.injectNonContextualInstance(CDIInjectionEnricher.java:113)
at org.jboss.arquillian.testenricher.cdi.CDIInjectionEnricher.injectClass(CDIInjectionEnricher.java:93)
... 31 more
Caused by: org.jboss.weld.exceptions.WeldException: by java.lang.VerifyError: class pl.softwaremill.weldbugs.bug2.org$jboss$weld$bean-1ed4ae51-6ceb-40b2-899a-ed6d1f90409e$jar-ManagedBean-class_pl$softwaremill$weldbugs$bug2$TestBean2_$$_WeldProxy overrides final method someMethod.()V
at org.jboss.weld.bean.proxy.ProxyFactory.getProxyClass(ProxyFactory.java:268)
at org.jboss.weld.bean.proxy.ProxyFactory.create(ProxyFactory.java:198)
at org.jboss.weld.bean.ManagedBean.applyInterceptors(ManagedBean.java:564)
... 44 more
Caused by: javassist.CannotCompileException: by java.lang.VerifyError: class pl.softwaremill.weldbugs.bug2.org$jboss$weld$bean-1ed4ae51-6ceb-40b2-899a-ed6d1f90409e$jar-ManagedBean-class_pl$softwaremill$weldbugs$bug2$TestBean2_$$_WeldProxy overrides final method someMethod.()V
at org.jboss.weld.util.bytecode.ClassFileUtils.toClass(ClassFileUtils.java:117)
at org.jboss.weld.bean.proxy.ProxyFactory.createProxyClass(ProxyFactory.java:376)
at org.jboss.weld.bean.proxy.ProxyFactory.getProxyClass(ProxyFactory.java:264)
... 46 more
Caused by: java.lang.VerifyError: class pl.softwaremill.weldbugs.bug2.org$jboss$weld$bean-1ed4ae51-6ceb-40b2-899a-ed6d1f90409e$jar-ManagedBean-class_pl$softwaremill$weldbugs$bug2$TestBean2_$$_WeldProxy overrides final method someMethod.()V
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
at java.lang.ClassLoader.defineClass(ClassLoader.java:466)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.weld.util.bytecode.ClassFileUtils.toClass2(ClassFileUtils.java:143)
at org.jboss.weld.util.bytecode.ClassFileUtils.toClass(ClassFileUtils.java:109)
... 48 more