 
   test "unsafely inspect bad implementation" do
     exception_message = ~s'''
-    got MyArgumentError with message:
+    got ArgumentError with message:
 
         """
         errors were found at the given arguments:

    # called by another exception (Protocol.UndefinedError in this case)
    exception_message = ~s'''
    protocol Enumerable not implemented for #Inspect.Error<
      got MyArgumentError with message:

          """
          errors were found at the given arguments:

    rescue
      exception in Inspect.Error ->
        assert Exception.message(exception) =~ exception_message
        assert [{:erlang, :atom_to_binary, _, _} | _] = __STACKTRACE__
    else
      _ -> flunk("expected failure")
    end
