Fix saving of tracebacks on module failure

lib/ansible/plugins/action/__init__.py

@@ -506,13 +506,12 @@ class ActionBase(with_metaclass(ABCMeta, object)):
         except ValueError:
             # not valid json, lets try to capture error
             data = dict(failed=True, parsed=False)
-            if 'stderr' in res and res['stderr'].startswith(u'Traceback'):
-                data['exception'] = res['stderr']
-            else:
             data['msg'] = "MODULE FAILURE"
             data['module_stdout'] = res.get('stdout', u'')
             if 'stderr' in res:
                 data['module_stderr'] = res['stderr']
+                if res['stderr'].startswith(u'Traceback'):
+                    data['exception'] = res['stderr']
 
         # pre-split stdout into lines, if stdout is in the data and there
         # isn't already a stdout_lines value there

lib/ansible/plugins/action/synchronize.py

@@ -327,6 +327,6 @@ class ActionModule(ActionBase):
         if 'SyntaxError' in result.get('exception', result.get('msg', '')):
             # Emit a warning about using python3 because synchronize is
             # somewhat unique in running on localhost
-            result['traceback'] = result['msg']
+            result['exception'] = result['msg']
             result['msg'] = 'SyntaxError parsing module.  Perhaps invoking "python" on your local (or delegate_to) machine invokes python3.  You can set ansible_python_interpreter for localhost (or the delegate_to machine) to the location of python2 to fix this'
         return result