Functional tests in weld examples throw error

java.lang.RuntimeException: Unable to instantiate Drone via org.openqa.selenium.htmlunit.HtmlUnitDriver(Capabilities)
        at org.jboss.arquillian.drone.webdriver.factory.SecurityActions.newInstance(SecurityActions.java:160)
        at org.jboss.arquillian.drone.webdriver.factory.HtmlUnitDriverFactory.createInstance(HtmlUnitDriverFactory.java:86)
        at org.jboss.arquillian.graphene.drone.factory.GrapheneHtmlUnitDriverFactory.createInstance(GrapheneHtmlUnitDriverFactory.java:74)
        at org.jboss.arquillian.graphene.drone.factory.GrapheneHtmlUnitDriverFactory.createInstance(GrapheneHtmlUnitDriverFactory.java:39)
        at org.jboss.arquillian.drone.webdriver.factory.WebDriverFactory.createInstance(WebDriverFactory.java:129)
        at org.jboss.arquillian.graphene.drone.factory.GrapheneWebDriverFactory.createInstance(GrapheneWebDriverFactory.java:80)
        at org.jboss.arquillian.graphene.drone.factory.GrapheneWebDriverFactory.createInstance(GrapheneWebDriverFactory.java:41)
        at org.jboss.arquillian.drone.impl.DroneCreator.createWebTestBrowser(DroneCreator.java:71)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
        at org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:99)
        at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:81)
        at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:135)
        at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:115)
        at org.jboss.arquillian.core.impl.EventImpl.fire(EventImpl.java:67)
        at org.jboss.arquillian.drone.impl.DroneConfigurator.configureDrone(DroneConfigurator.java:116)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
        at org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:99)
        at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:81)
        at org.jboss.arquillian.test.impl.TestContextHandler.createClassContext(TestContextHandler.java:75)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
        at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
        at org.jboss.arquillian.test.impl.TestContextHandler.createSuiteContext(TestContextHandler.java:60)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
        at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
        at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:135)
        at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:115)
        at org.jboss.arquillian.test.impl.EventTestRunnerAdaptor.beforeClass(EventTestRunnerAdaptor.java:80)
        at org.jboss.arquillian.junit.Arquillian$2.evaluate(Arquillian.java:182)
        at org.jboss.arquillian.junit.Arquillian.multiExecute(Arquillian.java:314)
        at org.jboss.arquillian.junit.Arquillian.access$100(Arquillian.java:46)
        at org.jboss.arquillian.junit.Arquillian$3.evaluate(Arquillian.java:199)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
        at org.jboss.arquillian.junit.Arquillian.run(Arquillian.java:147)
        at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)
        at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
        at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
        at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
        at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
        at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
        at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)
Caused by: java.lang.NoSuchFieldError: NO_FORMAT
        at org.apache.log4j.spi.LoggingEvent.<init>(LoggingEvent.java:106)
        at org.apache.log4j.Category.forcedLog(Category.java:118)
        at org.apache.log4j.Category.log(Category.java:288)
        at org.apache.commons.logging.impl.Log4JLogger.debug(Log4JLogger.java:177)
        at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:290)
        at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:369)
        at org.openqa.selenium.htmlunit.HtmlUnitDriver.get(HtmlUnitDriver.java:346)
        at org.openqa.selenium.htmlunit.HtmlUnitDriver.get(HtmlUnitDriver.java:322)
        at org.openqa.selenium.htmlunit.HtmlUnitDriver.<init>(HtmlUnitDriver.java:162)
        at org.openqa.selenium.htmlunit.HtmlUnitDriver.<init>(HtmlUnitDriver.java:185)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
        at org.jboss.arquillian.drone.webdriver.factory.SecurityActions.newInstance(SecurityActions.java:142)
        ... 60 more