anchor.diff:  
   init(_) ->
       process_flag(trap_exit, true),
  -    ets:new(?OPENING, [set, protected, named_table, {keypos, #opener.key}]),
  +    _ = ets:new(?OPENING, [set, protected, named_table, {keypos, #opener.key}]),
       {ok, Evictor} = couch_event:link_listener(
               ?MODULE, handle_db_event, nil, [all_dbs]
           ),
  
positive.code:     {ok, St}.
  
  
  open_ddoc({DbName, validation_funs}=Key) ->
      {ok, DDocs} = fabric:design_docs(mem3:dbname(DbName)),
      Funs = lists:flatmap(fun(DDoc) ->
  
negative.code: 
  -define(OPENING, ddoc_cache_opening).
  
  -type dbname() :: iodata().
  -type docid() :: iodata().
  -type revision() :: {integer(), binary()}.
  
  -record(opener, {
      key,
  