anchor.diff:  }
   
   /// Responds with the updates test to the [request].
  -_updatesTest(request) {
  +void _updatesTest(HttpRequest request) {
     var queries = _parseInt(request.uri.queryParameters['queries']).clamp(1, 500);
     Future.wait(new List.generate(queries, (_) {
       return _queryRandom()
  
positive.code: /// address and port for incoming connections is configurable via command line
  /// arguments, as is the number of database connections to be maintained in the
  /// connection pool.
  main(List<String> args) {
    var parser = new ArgParser();
    parser.addOption('address', abbr: 'a', defaultsTo: '0.0.0.0');
    parser.addOption('port', abbr: 'p', defaultsTo: '8080');
  
negative.code: 
  /// The PostgreSQL connection pool used by all the tests that require database
  /// connectivity.
  pgpool.Pool _connectionPool;
  
  /// The mustache template which is rendered in the fortunes test.
  mustache.Template _fortunesTemplate;
  
  /// Starts a benchmark server, which listens for connections from
  /// '[address] : [port]' and maintains [dbConnections] connections to the
  /// database.
  void _startServer(serverSocket, dbConnections) {
    Future.wait([
      new File('postgresql.yaml').readAsString().then((config) {
        _connectionPool = new pgpool.Pool(
  