anchor.diff:      check_ring_size(Size),
       ct:pal("Scalaris booted with ~p node(s)...~n", [Size]),
       ?TRACE_RING_DATA(),
  +    test_server:timetrap_cancel(TimeTrap),
       Pid.
   
   %% @doc Creates a ring with Size random IDs.
  
positive.code:     check_ring_size(Size),
      ct:pal("unittest_helper:make_ring size ~p done.", [Size]),
      ?TRACE_RING_DATA(),
      Pid.
  
  %% @doc Stops a ring previously started with make_ring/1 or make_ring_with_ids/1.
  
negative.code: %%      a {config, [{Key, Value},...]} option.
  -spec make_ring(Size::pos_integer(), Options::kv_opts()) -> pid().
  make_ring(Size, Options) ->
      % allow at most 1s for each node to come up
      TimeTrap = test_server:timetrap(Size * 1000),
      _ = fix_cwd(),
      error_logger:tty(true),
      case ets:info(config_ets) of
  