Revise unhandled args patch.

sdk/lib/_internal/pub/test/pub_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS 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;
 
 import 'package:scheduled_test/scheduled_test.dart';
 
 import 'descriptor.dart' as d;
 import 'test_pub.dart';
@@ skipping 105 matching lines @@
 
   integration('an unexpected argument displays an error message', () {
     schedulePub(args: ['version', 'unexpected'],
         output: '''
         Print pub version.
 
         Usage: pub version
          -h, --help    Print usage information for this command.
         ''',
         error: '''
-        Command does not take any arguments.
+        Command "version" does not take any arguments.
         ''',
         exitCode: 64);
   });
 
   group('help', () {
     integration('shows help for a command', () {
       schedulePub(args: ['help', 'get'],
           output: '''
             Get the current package's dependencies.
 
@@ skipping 45 matching lines @@
       // The "version" file generated on developer builds is a little funky and
       // we need to make sure we don't choke on it.
       d.dir(sdkPath, [
         d.file('version', '0.1.2.0_r16279_bobross'),
       ]).create();
 
       schedulePub(args: ['version'], output: "Pub 0.1.2+0.r16279.bobross\n");
     });
   });
 }