Always enable the friendly pub unittest config locally.

utils/tests/pub/test_pub.dart

Index: utils/tests/pub/test_pub.dart
diff --git a/utils/tests/pub/test_pub.dart b/utils/tests/pub/test_pub.dart
index 83e2dee339cf75d51c3a6bb3930d3fe1f6524ce0..c0efd304ad0260c7012774ff3c323d0fa775d5b3 100644
--- a/utils/tests/pub/test_pub.dart
+++ b/utils/tests/pub/test_pub.dart
@@ -45,11 +45,15 @@ import 'descriptor.dart' as d;
 /// test configuration for the machine running the tests.
 initConfig() {
   // If we aren't running on the bots, use the human-friendly config.
-  if (new Options().arguments.contains('--human')) {
+  if (!runningOnBuildbot) {
     unittestConfiguration = new CommandLineConfiguration();
   }
 }
 
+/// Returns whether we're running on a Dart build bot.
+bool runningOnBuildbot =>
+  Platform.environment.containsKey('BUILDBOT_BUILDERNAME');
+
 /// The current [HttpServer] created using [serve].
 var _server;
 
@@ -399,7 +403,7 @@ void ensureGit() {
   schedule(() {
     return gitlib.isInstalled.then((installed) {
       if (installed) return;
-      if (Platform.environment.containsKey('BUILDBOT_BUILDERNAME')) return;
+      if (runningOnBuildbot) return;
       currentSchedule.abort();
     });
   }, 'ensuring that Git is installed');