anchor.diff:  %% format and converts 'pang' to 'fail' for easier reading.
   -spec gather_health_workers([{{pid(), reference()}, atom()}],
                               [{binary(), binary()}]) -> [{binary(), binary()}].
  -gather_health_workers([{{Pid, _}, Mod} | Rest] = List, Acc) ->
  +gather_health_workers([{{Pid, Ref}, Mod} | Rest] = List, Acc) ->
       %% Each worker is allotted `ping_timeout()' time to complete its check and report back
       %% to this process. We should always get a reply within this window since either the
       %% worker will send a result, trigger a timeout and send that, or crash in which case
  
positive.code:                             pang -> <<"fail">>;
                              timeout -> <<"fail">>
                          end,
              gather_health_workers(Rest, [ {?A2B(Mod), ResultBin} | Acc ]);
          {'DOWN', _MonRef, process, Pid, normal} ->
              %% ignore. should always get the message from the worker before the down
  
negative.code: 
  ping_modules() ->
      envy:get(oc_chef_wm, health_ping_modules,list).
  