Add flag to disable capturing stack traces.

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 f239de3d01762d51614439bc1f823d981189fbc1..32586836e345abcb146399a2f0cb06a403d4e6d3 100644
--- a/utils/tests/pub/test_pub.dart
+++ b/utils/tests/pub/test_pub.dart
@@ -47,6 +47,10 @@ initConfig() {
   // If we aren't running on the bots, use the human-friendly config.
   if (!runningOnBuildbot) {
     unittestConfiguration = new CommandLineConfiguration();
+
+    // By default, don't capture stack traces since they slow the tests way
+    // down. To debug failing tests, comment this out.
+    captureStackTraces = false;

[nweiz, 2013/04/09 21:25:58]

I'd rather put this in [integration], especially once captureStackTraces is a
property on Schedule.

Also, please make this configurable via the command line somehow. Maybe an
environment variable?

[Bob Nystrom, 2013/04/10 22:40:34]

Done.
Done. Add "--trace" to the command line.

   }
 }