anchor.diff:  import 'test_compiler.dart';
   import 'test_config.dart';
   import 'watcher.dart';
  -
  -/// The timeout we give the test process to connect to the test harness
  -/// once the process has entered its main method.
  -///
  -/// We time out test execution because we expect some tests to hang and we want
  -/// to know which test hung, rather than have the entire test harness just do
  -/// nothing for a few hours until the user (or CI environment) gets bored.
  -const Duration _kTestStartupTimeout = Duration(minutes: 5);
  -
  -/// The timeout we give the test process to start executing Dart code. When the
  -/// CPU is under severe load, this can take a while, but it's not indicative of
  -/// any problem with Flutter, so we give it a large timeout.
  -///
  -/// See comment under [_kTestStartupTimeout] regarding timeouts.
  -const Duration _kTestProcessTimeout = Duration(minutes: 5);
  -
  -/// Message logged by the test process to signal that its main method has begun
  -/// execution.
  -///
  -/// The test harness responds by starting the [_kTestStartupTimeout] countdown.
  -/// The CPU may be throttled, which can cause a long delay in between when the
  -/// process is spawned and when dart code execution begins; we don't want to
  -/// hold that against the test.
  -const String _kStartTimeoutTimerMessage = 'sky_shell test process has entered main method';
   
   /// The address at which our WebSocket server resides and at which the sky_shell
   /// processes will host the Observatory server.
  
positive.code:           watcher?.handleStartedProcess(
                ProcessEvent(ourTestCount, process, processObservatoryUri));
          },
          startTimeoutTimer: () {
            Future<InitialResult>.delayed(_kTestStartupTimeout)
                .then<void>((_) => timeout.complete());
          },
        );
  
        // At this point, three things can happen next:
  
negative.code: 
    void _pipeStandardStreamsToConsole(
      Process process, {
      Future<void> reportObservatoryUri(Uri uri),
    }) {
  
  