wrap str method in try/except to see why its fialing

Author: anikamukherji

tests/test_future/test_utils.py

@@ -379,11 +379,14 @@ def test_chained_exceptions_stacktrace(self):
 class CustomException(Exception):
     if PY2:
         def __str__(self):
-            out = Exception.__str__(self)
-            if hasattr(self, '__cause__') and self.__cause__ and hasattr(self.__cause__, '__traceback__') and self.__cause__.__traceback__:
-                out += '\n\nThe above exception was the direct cause of the following exception:\n\n'
-                out += ''.join(traceback.format_tb(self.__cause__.__traceback__) + ['{}: {}'.format(self.__cause__.__class__.__name__, self.__cause__.message)])
-            return out
+            try:
+                out = Exception.__str__(self)
+                if hasattr(self, '__cause__') and self.__cause__ and hasattr(self.__cause__, '__traceback__') and self.__cause__.__traceback__:
+                    out += '\n\nThe above exception was the direct cause of the following exception:\n\n'
+                    out += ''.join(traceback.format_tb(self.__cause__.__traceback__) + ['{}: {}'.format(self.__cause__.__class__.__name__, self.__cause__)])
+                return out
+            except Exception as e:
+                print(e)
     else:
         pass