anchor.diff:  
   %% @doc Set the loglevel for a particular backend.
   set_loglevel(Handler, Level) when is_atom(Level) ->
  -    Reply = gen_event:call(lager_event, Handler, {set_loglevel, Level}),
  +    Reply = gen_event:call(lager_event, Handler, {set_loglevel, Level}, infinity),
       %% recalculate min log level
       MinLog = minimum_loglevel(get_loglevels()),
       lager_mochiglobal:put(loglevel, MinLog),
  
positive.code: %% @doc Set the loglevel for a particular backend that has multiple identifiers
  %% (eg. the file backend).
  set_loglevel(Handler, Ident, Level) when is_atom(Level) ->
      Reply = gen_event:call(lager_event, Handler, {set_loglevel, Ident, Level}),
      %% recalculate min log level
      MinLog = minimum_loglevel(get_loglevels()),
      lager_mochiglobal:put(loglevel, MinLog),
  
negative.code: 
  %% @private
  get_loglevels() ->
      [gen_event:call(lager_event, Handler, get_loglevel, infinity) ||
          Handler <- gen_event:which_handlers(lager_event)].
  
  %% @private
  