Output the exception.

Author: khatchad

com.ibm.wala.cast.python/source/com/ibm/wala/cast/python/client/PythonAnalysisEngine.java

@@ -168,10 +168,7 @@ public IClassHierarchy buildClassHierarchy() {
     try {
       Util.checkForFrontEndErrors(cha);
     } catch (WalaException e) {
-      logger.log(
-          Level.WARNING,
-          e,
-          () -> "Encountered WALA exception, most likely from front-end parsing errors.");
+      logger.log(Level.WARNING, e, () -> "Encountered WALA exception: " + e);
     }
 
     setClassHierarchy(cha);