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

vendor/symfony/console/Event/ConsoleTerminateEvent.php

@@ -0,0 +1,58 @@
+<?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\Console\Event;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Allows to manipulate the exit code of a command after its execution.
+ *
+ * @author Francesco Levorato <git@flevour.net>
+ */
+class ConsoleTerminateEvent extends ConsoleEvent
+{
+    /**
+     * The exit code of the command.
+     *
+     * @var int
+     */
+    private $exitCode;
+
+    public function __construct(Command $command, InputInterface $input, OutputInterface $output, $exitCode)
+    {
+        parent::__construct($command, $input, $output);
+
+        $this->setExitCode($exitCode);
+    }
+
+    /**
+     * Sets the exit code.
+     *
+     * @param int $exitCode The command exit code
+     */
+    public function setExitCode($exitCode)
+    {
+        $this->exitCode = (int) $exitCode;
+    }
+
+    /**
+     * Gets the exit code.
+     *
+     * @return int The command exit code
+     */
+    public function getExitCode()
+    {
+        return $this->exitCode;
+    }
+}