TestNG IRetryAnalyzer not working

Question

I am using TestNG IRetryAnalyser, I am facing following issues

When I implement the listener and override retry () method getting following:

Listener com.socialtwist.taf.testnghelpers.RetryAnalyzer@1cc0a7f must be one of ITestListener, ISuiteListener, IReporter,  IAnnotationTransformer, IMethodInterceptor or IInvokedMethodListener
Usage: <main class> [options]

The following is listener code:

public class RetryAnalyzer implements IRetryAnalyzer {

private int count = 0; 

private int maxCount = 3; 
protected Logger log;
private static Logger testbaseLog;

static {

    testbaseLog = Logger.getLogger("testbase.testng");
}

public RetryAnalyzer()
{
    testbaseLog.trace( " ModeledRetryAnalyzer constructor " + this.getClass().getName() );

}

@Override 
public boolean retry(ITestResult result) { 
    testbaseLog.trace("running retry logic for  '" 
            + result.getName() 
            + "' on class " + this.getClass().getName()+" with status "+result.getStatus()+"Retrying "+count+"times" );
        if(count < maxCount) {                     
                count++;                                    
                return true; 
        } 
        return false; 
}

}

The following is my test class:

public class Testing {


@Test(retryAnalyzer=RetryAnalyzer.class)
 public void testMethod1() {
      System.out.println("in method1 " );
      Assert.fail();
 }
}

I am using TestNG 6.3.1.jar.