gistfile1.txt

chef@chef:~/log$ java -jar selenium-server-6ee07f049e22ff1a2fdacf799c3275f4f07cb802.jar
16:27:05.422 INFO - Launching a standalone server
16:27:05.456 INFO - Java: Sun Microsystems Inc. 20.45-b01
16:27:05.456 INFO - OS: Linux 3.13.0-32-generic i386
16:27:05.465 INFO - v2.45.0, with Core v2.45.0. Built from revision 6ee07f0
16:27:05.514 INFO - Unable to register driver with className com.opera.core.systems.OperaDriver due to ClassNotFoundException
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/gargoylesoftware/htmlunit/WebWindowListener : Unsupported major.minor version 51.0
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:171)
        at org.openqa.selenium.remote.server.DefaultDriverSessions.registerDriver(DefaultDriverSessions.java:100)
        at org.openqa.selenium.remote.server.DefaultDriverSessions.registerDefaults(DefaultDriverSessions.java:78)
        at org.openqa.selenium.remote.server.DefaultDriverSessions.<init>(DefaultDriverSessions.java:70)
        at org.openqa.selenium.remote.server.DefaultDriverSessions.<init>(DefaultDriverSessions.java:57)
        at org.openqa.selenium.server.SeleniumServer.assembleHandlers(SeleniumServer.java:362)
        at org.openqa.selenium.server.SeleniumServer.createJettyServer(SeleniumServer.java:322)
        at org.openqa.selenium.server.SeleniumServer.<init>(SeleniumServer.java:277)
        at org.openqa.selenium.server.SeleniumServer.main(SeleniumServer.java:244)
        at org.openqa.grid.selenium.GridLauncher.main(GridLauncher.java:97)