anchor.diff:  import 'package:logging/logging.dart';
   import 'package:dartdoc_generator/datastore.dart';
   import 'package:args/args.dart';
  +import 'dart:async';
   
   main(List<String> args) async {
     try {
  
positive.code:       previousErroredPackagesLength = errorPackages.length;
        var duration = new Duration(minutes: 1);
        _logger.info("Waiting for ${duration.inSeconds}s...");
        sleep(duration);
      }
    } catch (error, stackTrace) {
      print(error);
  
negative.code:   }
  }
  
  Logger _logger = new Logger("dartdoc_generator");
  