Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/http-kernel/Tests/Fixtures/KernelForOverrideName.php

@@ -0,0 +1,28 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\Tests\Fixtures;
+
+use Symfony\Component\HttpKernel\Kernel;
+use Symfony\Component\Config\Loader\LoaderInterface;
+
+class KernelForOverrideName extends Kernel
+{
+    protected $name = 'overridden';
+
+    public function registerBundles()
+    {
+    }
+
+    public function registerContainerConfiguration(LoaderInterface $loader)
+    {
+    }
+}