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

vendor/symfony/routing/Exception/ExceptionInterface.php

@@ -0,0 +1,23 @@
+<?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\Routing\Exception;
+
+/**
+ * ExceptionInterface.
+ *
+ * @author Alexandre Salomé <alexandre.salome@gmail.com>
+ *
+ * @api
+ */
+interface ExceptionInterface
+{
+}

vendor/symfony/routing/Exception/InvalidParameterException.php

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+<?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\Routing\Exception;
+
+/**
+ * Exception thrown when a parameter is not valid.
+ *
+ * @author Alexandre Salomé <alexandre.salome@gmail.com>
+ *
+ * @api
+ */
+class InvalidParameterException extends \InvalidArgumentException implements ExceptionInterface
+{
+}

vendor/symfony/routing/Exception/MethodNotAllowedException.php

@@ -0,0 +1,46 @@
+<?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\Routing\Exception;
+
+/**
+ * The resource was found but the request method is not allowed.
+ *
+ * This exception should trigger an HTTP 405 response in your application code.
+ *
+ * @author Kris Wallsmith <kris@symfony.com>
+ *
+ * @api
+ */
+class MethodNotAllowedException extends \RuntimeException implements ExceptionInterface
+{
+    /**
+     * @var array
+     */
+    protected $allowedMethods = array();
+
+    public function __construct(array $allowedMethods, $message = null, $code = 0, \Exception $previous = null)
+    {
+        $this->allowedMethods = array_map('strtoupper', $allowedMethods);
+
+        parent::__construct($message, $code, $previous);
+    }
+
+    /**
+     * Gets the allowed HTTP methods.
+     *
+     * @return array
+     */
+    public function getAllowedMethods()
+    {
+        return $this->allowedMethods;
+    }
+}

vendor/symfony/routing/Exception/MissingMandatoryParametersException.php

@@ -0,0 +1,24 @@
+<?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\Routing\Exception;
+
+/**
+ * Exception thrown when a route cannot be generated because of missing
+ * mandatory parameters.
+ *
+ * @author Alexandre Salomé <alexandre.salome@gmail.com>
+ *
+ * @api
+ */
+class MissingMandatoryParametersException extends \InvalidArgumentException implements ExceptionInterface
+{
+}

vendor/symfony/routing/Exception/ResourceNotFoundException.php

@@ -0,0 +1,25 @@
+<?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\Routing\Exception;
+
+/**
+ * The resource was not found.
+ *
+ * This exception should trigger an HTTP 404 response in your application code.
+ *
+ * @author Kris Wallsmith <kris@symfony.com>
+ *
+ * @api
+ */
+class ResourceNotFoundException extends \RuntimeException implements ExceptionInterface
+{
+}

vendor/symfony/routing/Exception/RouteNotFoundException.php

@@ -0,0 +1,23 @@
+<?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\Routing\Exception;
+
+/**
+ * Exception thrown when a route does not exist.
+ *
+ * @author Alexandre Salomé <alexandre.salome@gmail.com>
+ *
+ * @api
+ */
+class RouteNotFoundException extends \InvalidArgumentException implements ExceptionInterface
+{
+}