anchor.diff:         {_Pid, {_Mod, raw_request, [_Ref, IoData, _TimeOut]}, _Res} <- Hist],
       {match, _} = re:run(Fail, Msg),
       %% 15 + 3 failures
  -    {match, _} = re:run(Fail, "This drain dropped 3 messages"),
  +    {match, _} = re:run(Fail, "3 messages dropped"),
       {match, _} = re:run(Success, Msg),
       %% (15 + 3) + 3 failures
  -    {match, _} = re:run(Success, "This drain dropped 21 messages").
  +    {match, _} = re:run(Success, "21 messages dropped").
   
   %% We drop frames twice, but the rest is successfully delivered. Overflow
   %% messages should be accumulated. This one experiments with temporary
  
positive.code:             timer:sleep(10),
              wait_for_mocked_call(Mod,Fun,Args,NumCalls,Max,T0)
      end.
  
  
  
negative.code:     {match, _} = re:run(Success2, Msg), % success 3rd frame
      {match, _} = re:run(Success3, Msg), % success 4th frame
      %% 15 + 3 + 3 failures
      {match, _} = re:run(Success1, "21 messages dropped"),
      {match, _} = re:run(Success2, "3 messages dropped"),
      {match, _} = re:run(Success3, "3 messages dropped").
  
  %% Checking that framing funs and overflow functions are alright
  full_stack(Config) ->
  