Use the new test runner.

test/build/outputs_error_to_json_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS d.file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library pub_tests;
+// Dart2js can take a long time to compile dart code, so we increase the timeout
+// to cope with that.
+@Timeout.factor(3)
 
 import 'package:pub/src/exit_codes.dart' as exit_codes;
 import 'package:scheduled_test/scheduled_test.dart';
 
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 
 const TRANSFORMER = """
 import 'dart:async';
 
 import 'package:barback/barback.dart';
 
 class RewriteTransformer extends Transformer {
   RewriteTransformer.asPlugin();
 
   String get allowedExtensions => '.txt';
 
   Future apply(Transform transform) => throw new Exception('oh no!');
 }
 """;
 
 main() {
-  initConfig();
   withBarbackVersions("any", () {
     integration("outputs error to JSON in a failed build", () {
-      // Loading transformers takes several seconds, so make sure we don't
-      // timeout.
-      currentSchedule.timeout *= 2;
-
       d.dir(appPath, [
         d.pubspec({
           "name": "myapp",
           "transformers": ["myapp"]
         }),
         d.dir("lib", [
           d.file("transformer.dart", TRANSFORMER)
         ]),
         d.dir("web", [
           d.file("foo.txt", "foo")
@@ skipping 10 matching lines @@
                 "error": startsWith("Transform Rewrite on myapp|web/foo.txt "
                     "threw error: oh no!")
               }
             ],
             "log": []
           },
           exitCode: exit_codes.DATA);
     });
   });
 }