anchor.diff:  
   import '../base/common.dart';
   import '../base/os.dart';
  +import '../cache.dart';
   import '../dart/pub.dart';
   import '../project.dart';
   import '../reporting/usage.dart';
  
positive.code: 
    @override
    Future<FlutterCommandResult> runCommand() async {
      await pubInteractively(argResults.rest);
      return null;
    }
  
negative.code: 
    @override
    Future<FlutterCommandResult> runCommand() async {
      Cache.releaseLockEarly();
      await pub(<String>['run', 'test', ...argResults.rest], context: PubContext.runTest, retry: false);
      return null;
    }
  