Make sure we wrap all AsyncErrors in ScheduleErrors.

pkg/scheduled_test/lib/src/schedule.dart

 // Copyright (c) 2013, 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 schedule;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:unittest/unittest.dart' as unittest;
@@ skipping 115 matching lines @@
     return new Future.immediate(null).then((_) {
       try {
         setUp();
       } catch (e, stackTrace) {
         throw new ScheduleError.from(this, e, stackTrace: stackTrace);
       }
 
       _state = ScheduleState.RUNNING;
       return tasks._run();
     }).catchError((e) {
-      errors.add(e);
+      errors.add(new ScheduleError.from(this, e));
       return onException._run().catchError((innerError) {
         // If an error occurs in a task in the onException queue, make sure it's
         // registered in the error list and re-throw it. We could also re-throw
         // `e`; ultimately, all the errors will be shown to the user if any
         // ScheduleError is thrown.
-        errors.add(innerError);
+        errors.add(new ScheduleError.from(this, innerError));
         throw innerError;
       }).then((_) {
         // If there are no errors in the onException queue, re-throw the
         // original error that caused it to run.
         throw e;
       });
     }).whenComplete(() {
       return onComplete._run().catchError((e) {
         // If an error occurs in a task in the onComplete queue, make sure it's
         // registered in the error list and re-throw it.
-        errors.add(e);
+        errors.add(new ScheduleError.from(this, e));
         throw e;
       });
     }).whenComplete(() {
       if (_timeoutTimer != null) _timeoutTimer.cancel();
       _state = ScheduleState.DONE;
     });
   }
 
   /// Signals that an out-of-band error has occurred. Using [wrapAsync] along
   /// with `throw` is usually preferable to calling this directly.
@@ skipping 247 matching lines @@
     return _contents.map((task) {
       var lines = task.toString().split("\n");
       var firstLine = task == highlight ?
           "> ${lines.first}" : "* ${lines.first}";
       lines = new List.from(lines.skip(1).map((line) => "| $line"));
       lines.insertRange(0, 1, firstLine);
       return lines.join("\n");
     }).join("\n");
   }
 }