anchor.diff:      print("Change '${changeSet.name}' - "
           "Incremental compilation took: ${iterTimer.elapsedMilliseconds}ms");
     }
  +
  +  dir.deleteSync(recursive: true);
   }
   
   /// Apply all edits of a single iteration by updating the copy of the file in
  
positive.code:         _resolveOverlayUri(options["sdk-library-specification"]);
    }
    if (options['target'] == 'flutter') {
      compilerOptions..target = new FlutterTarget(new TargetFlags());
    }
  
    var timer1 = new Stopwatch()..start();
    var generator =
  
negative.code: import 'package:args/args.dart';
  import 'package:front_end/file_system.dart' show FileSystemEntity;
  import 'package:front_end/front_end.dart';
  import 'package:front_end/src/byte_store/protected_file_byte_store.dart';
  import 'package:front_end/incremental_kernel_generator.dart';
  import 'package:front_end/memory_file_system.dart';
  import 'package:front_end/physical_file_system.dart';
  