title: java.lang.ClassCastException: antlr.CommonToken cannot be cast to antlr.Token in Jenkins Checkstyle report
body: <p>I am using checkstyle 5.5 for my project and building using Jenkins 1.462.</p>
  
  <p>My project builds successfully, but every java class in my project causes Checkstyle to create a high priority, <code>TreeWalker</code> error like below:</p>
  
  <blockquote>
    <p>ProductComparisonService.java:0, TreeWalker, Priority: High Got an
    exception - java.lang.ClassCastException: antlr.CommonToken cannot be
    cast to antlr.Token</p>
    
    <p>No description available. Please upgrade to latest checkstyle version.</p>
  </blockquote>
  
  <p>I tried upgrading to checkstyle 5.6 but that did not solve the problem.  I'd appreciate any ideas.</p>