- Include a random number in the full snapshot filename as some of the tests

tools/testing/dart/test_configurations.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.
 
 library test_configurations;
 
 import "dart:async";
 import 'dart:io';
 import "dart:math" as math;
 
@@ skipping 207 matching lines @@
     }
   }
 
   void allTestsFinished() {
     for (var conf in configurations) {
       if (conf.containsKey('_servers_')) {
         conf['_servers_'].stopServers();
       }
     }
     DebugLogger.close();
+    TestUtils.deleteTempSnapshotDirectory(configurations[0]);
   }
 
   var eventListener = [];
 
   // We don't print progress if we list tests.
   if (progressIndicator != 'silent' && !listTests) {
     var printFailures = true;
     var formatter = new Formatter();
     if (progressIndicator == 'color') {
       progressIndicator = 'compact';
@@ skipping 52 matching lines @@
                      recordingOutputPath);
   }
 
   // Start all the HTTP servers required before starting the process queue.
   if (serverFutures.isEmpty) {
     startProcessQueue();
   } else {
     Future.wait(serverFutures).then((_) => startProcessQueue());
   }
 }