Get rid of 'close' on process. It is very easy to use incorrectly and cut off data from your stream…

tools/testing/dart/test_suite.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.
 
 /**
  * Classes and methods for enumerating and preparing tests.
  *
  * This library includes:
  *
  * - Creating tests by listing all the Dart files in certain directories,
@@ skipping 49 matching lines @@
 
 
 // TODO(1030): remove once in the corelib.
 bool Contains(element, collection) => collection.indexOf(element) >= 0;
 
 
 void ccTestLister() {
   port.receive((String runnerPath, SendPort replyTo) {
     Future processFuture = Process.start(runnerPath, ["--list"]);
     processFuture.then((p) {
+      // Drain stderr to not leak resources.
+      p.stderr.onData = p.stderr.read;
       StringInputStream stdoutStream = new StringInputStream(p.stdout);
       var streamDone = false;
       var processExited = false;
       checkDone() {
         if (streamDone && processExited) {
           replyTo.send("");
         }
       }
       stdoutStream.onLine = () {
         String line = stdoutStream.readLine();
@@ skipping 1404 matching lines @@
  * $noCrash tests are expected to be flaky but not crash
  * $pass tests are expected to pass
  * $failOk tests are expected to fail that we won't fix
  * $fail tests are expected to fail that we should fix
  * $crash tests are expected to crash that we should fix
  * $timeout tests are allowed to timeout
 """;
     print(report);
    }
 }