anchor.diff:  build_plt(State, Plt, Output, Files) ->
       ?INFO("Building with ~b files in ~ts...", [length(Files), rebar_dir:format_source_file_name(Plt)]),
       GetWarnings = get_config(State, get_warnings, false),
  +    OutputFormat = get_config(State, output_format, formatted),
       Opts = [{analysis_type, plt_build},
               {get_warnings, GetWarnings},
  +            {output_format, OutputFormat},
               {output_plt, Plt},
               {files, Files}],
       run_dialyzer(State, Opts, Output).
  
positive.code:                      {timing, Timing} |
                       Opts],
              ?DEBUG("Running dialyzer with options: ~p~n", [Opts2]),
              Warnings = format_warnings(rebar_state:opts(State),
                                         Output, dialyzer:run(Opts2)),
              {Warnings, State};
          false ->
              Opts2 = [{warnings, no_warnings()},
  
negative.code:     {0, State};
  succ_typings_(State, Plt, Output, Files) ->
      ?INFO("Analyzing ~b files with ~ts...", [length(Files), rebar_dir:format_source_file_name(Plt)]),
      OutputFormat = get_config(State, output_format, formatted),
      Opts = [{analysis_type, succ_typings},
              {get_warnings, true},
              {output_format, OutputFormat},
              {from, byte_code},
              {files, Files},
              {init_plt, Plt}],
  