diff --git a/link b/link
index a5030d0683..6a2ec15e22 100755
--- a/link
+++ b/link
@@ -37,7 +37,12 @@ if (!is_dir("$argv[1]/vendor/symfony")) {
 $sfPackages = array('symfony/symfony' => __DIR__);
 
 $filesystem = new Filesystem();
-foreach (glob(__DIR__.'/src/Symfony/{Bundle,Bridge,Component,Component/Security}/*', GLOB_BRACE | GLOB_ONLYDIR | GLOB_NOSORT) as $dir) {
+$braces = array('Bundle', 'Bridge', 'Component', 'Component/Security');
+$directories = call_user_func_array('array_merge', array_values(array_map(function ($part) {
+    return glob(__DIR__.'/src/Symfony/'.$part.'/*', GLOB_ONLYDIR | GLOB_NOSORT);
+}, $braces)));
+
+foreach ($directories as $dir) {
     if ($filesystem->exists($composer = "$dir/composer.json")) {
         $sfPackages[json_decode(file_get_contents($composer))->name] = $dir;
     }
diff --git a/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php b/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php
index f32e155078..abb1241653 100644
--- a/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php
+++ b/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php
@@ -214,41 +214,62 @@ class DeprecationErrorHandler
                     return $b['count'] - $a['count'];
                 };
 
-                $groups = array('unsilenced', 'remaining');
-                if (DeprecationErrorHandler::MODE_WEAK_VENDORS === $mode) {
-                    $groups[] = 'remaining vendor';
-                }
-                array_push($groups, 'legacy', 'other');
+                $displayDeprecations = function ($deprecations) use ($colorize, $cmp) {
+                    $groups = array('unsilenced', 'remaining');
+                    if (DeprecationErrorHandler::MODE_WEAK_VENDORS === $mode) {
+                        $groups[] = 'remaining vendor';
+                    }
+                    array_push($groups, 'legacy', 'other');
 
-                foreach ($groups as $group) {
-                    if ($deprecations[$group.'Count']) {
-                        echo "\n", $colorize(
-                            sprintf('%s deprecation notices (%d)', ucfirst($group), $deprecations[$group.'Count']),
-                            'legacy' !== $group && 'remaining vendor' !== $group
-                        ), "\n";
+                    foreach ($groups as $group) {
+                        if ($deprecations[$group.'Count']) {
+                            echo "\n", $colorize(
+                                sprintf('%s deprecation notices (%d)', ucfirst($group), $deprecations[$group.'Count']),
+                                'legacy' !== $group && 'remaining vendor' !== $group
+                            ), "\n";
 
-                        uasort($deprecations[$group], $cmp);
+                            uasort($deprecations[$group], $cmp);
 
-                        foreach ($deprecations[$group] as $msg => $notices) {
-                            echo "\n  ", $notices['count'], 'x: ', $msg, "\n";
+                            foreach ($deprecations[$group] as $msg => $notices) {
+                                echo "\n  ", $notices['count'], 'x: ', $msg, "\n";
 
-                            arsort($notices);
+                                arsort($notices);
 
-                            foreach ($notices as $method => $count) {
-                                if ('count' !== $method) {
-                                    echo '    ', $count, 'x in ', preg_replace('/(.*)\\\\(.*?::.*?)$/', '$2 from $1', $method), "\n";
+                                foreach ($notices as $method => $count) {
+                                    if ('count' !== $method) {
+                                        echo '    ', $count, 'x in ', preg_replace('/(.*)\\\\(.*?::.*?)$/', '$2 from $1', $method), "\n";
+                                    }
                                 }
                             }
                         }
                     }
-                }
-                if (!empty($notices)) {
-                    echo "\n";
+                    if (!empty($notices)) {
+                        echo "\n";
+                    }
+                };
+
+                $displayDeprecations($deprecations);
+
+                // store failing status
+                $isFailing = DeprecationErrorHandler::MODE_WEAK !== $mode && $mode < $deprecations['unsilencedCount'] + $deprecations['remainingCount'] + $deprecations['otherCount'];
+
+                // reset deprecations array
+                foreach ($deprecations as $group => $arrayOrInt) {
+                    $deprecations[$group] = is_int($arrayOrInt) ? 0 : array();
                 }
 
-                if (DeprecationErrorHandler::MODE_WEAK !== $mode && $mode < $deprecations['unsilencedCount'] + $deprecations['remainingCount'] + $deprecations['otherCount']) {
-                    exit(1);
-                }
+                register_shutdown_function(function () use (&$deprecations, $isFailing, $displayDeprecations, $mode) {
+                    foreach ($deprecations as $group => $arrayOrInt) {
+                        if (0 < (is_int($arrayOrInt) ? $arrayOrInt : count($arrayOrInt))) {
+                            echo "Shutdown-time deprecations:\n";
+                            break;
+                        }
+                    }
+                    $displayDeprecations($deprecations);
+                    if ($isFailing || DeprecationErrorHandler::MODE_WEAK !== $mode && $mode < $deprecations['unsilencedCount'] + $deprecations['remainingCount'] + $deprecations['otherCount']) {
+                        exit(1);
+                    }
+                });
             });
         }
     }
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListener.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV5.php
similarity index 76%
rename from src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListener.php
rename to src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV5.php
index 5ed545a512..2da40f2c20 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListener.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV5.php
@@ -18,7 +18,7 @@ namespace Symfony\Bridge\PhpUnit\Legacy;
  *
  * @internal
  */
-class SymfonyTestsListener extends \PHPUnit_Framework_BaseTestListener
+class SymfonyTestsListenerForV5 extends \PHPUnit_Framework_BaseTestListener
 {
     private $trait;
 
@@ -34,26 +34,26 @@ class SymfonyTestsListener extends \PHPUnit_Framework_BaseTestListener
 
     public function startTestSuite(\PHPUnit_Framework_TestSuite $suite)
     {
-        return $this->trait->startTestSuite($suite);
+        $this->trait->startTestSuite($suite);
     }
 
     public function addSkippedTest(\PHPUnit_Framework_Test $test, \Exception $e, $time)
     {
-        return $this->trait->addSkippedTest($test, $e, $time);
+        $this->trait->addSkippedTest($test, $e, $time);
     }
 
     public function startTest(\PHPUnit_Framework_Test $test)
     {
-        return $this->trait->startTest($test);
+        $this->trait->startTest($test);
     }
 
     public function addWarning(\PHPUnit_Framework_Test $test, \PHPUnit_Framework_Warning $e, $time)
     {
-        return $this->trait->addWarning($test, $e, $time);
+        $this->trait->addWarning($test, $e, $time);
     }
 
     public function endTest(\PHPUnit_Framework_Test $test, $time)
     {
-        return $this->trait->endTest($test, $time);
+        $this->trait->endTest($test, $time);
     }
 }
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV6.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV6.php
new file mode 100644
index 0000000000..d8e74e8192
--- /dev/null
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV6.php
@@ -0,0 +1,64 @@
+<?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\Bridge\PhpUnit\Legacy;
+
+use PHPUnit\Framework\BaseTestListener;
+use PHPUnit\Framework\Test;
+use PHPUnit\Framework\TestSuite;
+use PHPUnit\Framework\Warning;
+
+/**
+ * Collects and replays skipped tests.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+class SymfonyTestsListenerForV6 extends BaseTestListener
+{
+    private $trait;
+
+    public function __construct(array $mockedNamespaces = array())
+    {
+        $this->trait = new Legacy\SymfonyTestsListenerTrait($mockedNamespaces);
+    }
+
+    public function globalListenerDisabled()
+    {
+        $this->trait->globalListenerDisabled();
+    }
+
+    public function startTestSuite(TestSuite $suite)
+    {
+        $this->trait->startTestSuite($suite);
+    }
+
+    public function addSkippedTest(Test $test, \Exception $e, $time)
+    {
+        $this->trait->addSkippedTest($test, $e, $time);
+    }
+
+    public function startTest(Test $test)
+    {
+        $this->trait->startTest($test);
+    }
+
+    public function addWarning(Test $test, Warning $e, $time)
+    {
+        $this->trait->addWarning($test, $e, $time);
+    }
+
+    public function endTest(Test $test, $time)
+    {
+        $this->trait->endTest($test, $time);
+    }
+}
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV7.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV7.php
new file mode 100644
index 0000000000..d3acd53960
--- /dev/null
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV7.php
@@ -0,0 +1,67 @@
+<?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\Bridge\PhpUnit;
+
+use PHPUnit\Framework\Test;
+use PHPUnit\Framework\TestListener;
+use PHPUnit\Framework\TestListenerDefaultImplementation;
+use PHPUnit\Framework\TestSuite;
+use PHPUnit\Framework\Warning;
+
+/**
+ * Collects and replays skipped tests.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+class SymfonyTestsListenerForV7 implements TestListener
+{
+    use TestListenerDefaultImplementation;
+
+    private $trait;
+
+    public function __construct(array $mockedNamespaces = array())
+    {
+        $this->trait = new SymfonyTestsListenerTrait($mockedNamespaces);
+    }
+
+    public function globalListenerDisabled()
+    {
+        $this->trait->globalListenerDisabled();
+    }
+
+    public function startTestSuite(TestSuite $suite): void
+    {
+        $this->trait->startTestSuite($suite);
+    }
+
+    public function addSkippedTest(Test $test, \Throwable $t, float $time): void
+    {
+        $this->trait->addSkippedTest($test, $t, $time);
+    }
+
+    public function startTest(Test $test): void
+    {
+        $this->trait->startTest($test);
+    }
+
+    public function addWarning(Test $test, Warning $e, float $time): void
+    {
+        $this->trait->addWarning($test, $e, $time);
+    }
+
+    public function endTest(Test $test, float $time): void
+    {
+        $this->trait->endTest($test, $time);
+    }
+}
diff --git a/src/Symfony/Bridge/PhpUnit/SymfonyTestsListener.php b/src/Symfony/Bridge/PhpUnit/SymfonyTestsListener.php
index c11fde9526..d46a79e00e 100644
--- a/src/Symfony/Bridge/PhpUnit/SymfonyTestsListener.php
+++ b/src/Symfony/Bridge/PhpUnit/SymfonyTestsListener.php
@@ -11,60 +11,10 @@
 
 namespace Symfony\Bridge\PhpUnit;
 
-use PHPUnit\Framework\BaseTestListener;
-use PHPUnit\Framework\Test;
-use PHPUnit\Framework\TestSuite;
-use PHPUnit\Framework\Warning;
-
 if (class_exists('PHPUnit_Runner_Version') && version_compare(\PHPUnit_Runner_Version::id(), '6.0.0', '<')) {
-    class_alias('Symfony\Bridge\PhpUnit\Legacy\SymfonyTestsListener', 'Symfony\Bridge\PhpUnit\SymfonyTestsListener');
-// Using an early return instead of a else does not work when using the PHPUnit phar due to some weird PHP behavior (the class
-// gets defined without executing the code before it and so the definition is not properly conditional)
+    class_alias('Symfony\Bridge\PhpUnit\Legacy\SymfonyTestsListenerForV5', 'Symfony\Bridge\PhpUnit\SymfonyTestsListener');
+} elseif (version_compare(\PHPUnit\Runner\Version::id(), '7.0.0', '<')) {
+    class_alias('Symfony\Bridge\PhpUnit\Legacy\SymfonyTestsListenerForV6', 'Symfony\Bridge\PhpUnit\SymfonyTestsListener');
 } else {
-    /**
-     * Collects and replays skipped tests.
-     *
-     * @author Nicolas Grekas <p@tchwork.com>
-     *
-     * @final
-     */
-    class SymfonyTestsListener extends BaseTestListener
-    {
-        private $trait;
-
-        public function __construct(array $mockedNamespaces = array())
-        {
-            $this->trait = new Legacy\SymfonyTestsListenerTrait($mockedNamespaces);
-        }
-
-        public function globalListenerDisabled()
-        {
-            $this->trait->globalListenerDisabled();
-        }
-
-        public function startTestSuite(TestSuite $suite)
-        {
-            return $this->trait->startTestSuite($suite);
-        }
-
-        public function addSkippedTest(Test $test, \Exception $e, $time)
-        {
-            return $this->trait->addSkippedTest($test, $e, $time);
-        }
-
-        public function startTest(Test $test)
-        {
-            return $this->trait->startTest($test);
-        }
-
-        public function addWarning(Test $test, Warning $e, $time)
-        {
-            return $this->trait->addWarning($test, $e, $time);
-        }
-
-        public function endTest(Test $test, $time)
-        {
-            return $this->trait->endTest($test, $time);
-        }
-    }
+    class_alias('Symfony\Bridge\PhpUnit\Legacy\SymfonyTestsListenerForV7', 'Symfony\Bridge\PhpUnit\SymfonyTestsListener');
 }
diff --git a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt
index 39a3e98586..7a0595a7dd 100644
--- a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt
+++ b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt
@@ -59,6 +59,10 @@ $foo = new FooTestCase();
 $foo->testLegacyFoo();
 $foo->testNonLegacyBar();
 
+register_shutdown_function(function () {
+    exit('I get precedence over any exit statements inside the deprecation error handler.');
+});
+
 ?>
 --EXPECTF--
 Unsilenced deprecation notices (3)
@@ -80,3 +84,4 @@ Other deprecation notices (1)
 
   1x: root deprecation
 
+I get precedence over any exit statements inside the deprecation error handler.
diff --git a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt
new file mode 100644
index 0000000000..fddeed6085
--- /dev/null
+++ b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt
@@ -0,0 +1,91 @@
+--TEST--
+Test DeprecationErrorHandler in default mode
+--FILE--
+<?php
+
+putenv('SYMFONY_DEPRECATIONS_HELPER');
+putenv('ANSICON');
+putenv('ConEmuANSI');
+putenv('TERM');
+
+$vendor = __DIR__;
+while (!file_exists($vendor.'/vendor')) {
+    $vendor = dirname($vendor);
+}
+define('PHPUNIT_COMPOSER_INSTALL', $vendor.'/vendor/autoload.php');
+require PHPUNIT_COMPOSER_INSTALL;
+require_once __DIR__.'/../../bootstrap.php';
+
+@trigger_error('root deprecation', E_USER_DEPRECATED);
+
+eval(<<<'EOPHP'
+namespace PHPUnit\Util;
+
+class Test
+{
+    public static function getGroups()
+    {
+        return array();
+    }
+}
+EOPHP
+);
+
+class PHPUnit_Util_Test
+{
+    public static function getGroups()
+    {
+        return array();
+    }
+}
+
+class FooTestCase
+{
+    public function testLegacyFoo()
+    {
+        @trigger_error('silenced foo deprecation', E_USER_DEPRECATED);
+        trigger_error('unsilenced foo deprecation', E_USER_DEPRECATED);
+        trigger_error('unsilenced foo deprecation', E_USER_DEPRECATED);
+    }
+
+    public function testNonLegacyBar()
+    {
+        @trigger_error('silenced bar deprecation', E_USER_DEPRECATED);
+        trigger_error('unsilenced bar deprecation', E_USER_DEPRECATED);
+    }
+}
+
+$foo = new FooTestCase();
+$foo->testLegacyFoo();
+$foo->testNonLegacyBar();
+
+register_shutdown_function(function () {
+    @trigger_error('root deprecation during shutdown', E_USER_DEPRECATED);
+});
+
+?>
+--EXPECTF--
+Unsilenced deprecation notices (3)
+
+  2x: unsilenced foo deprecation
+    2x in FooTestCase::testLegacyFoo
+
+  1x: unsilenced bar deprecation
+    1x in FooTestCase::testNonLegacyBar
+
+Remaining deprecation notices (1)
+
+  1x: silenced bar deprecation
+    1x in FooTestCase::testNonLegacyBar
+
+Legacy deprecation notices (1)
+
+Other deprecation notices (1)
+
+  1x: root deprecation
+
+Shutdown-time deprecations:
+
+Other deprecation notices (1)
+
+  1x: root deprecation during shutdown
diff --git a/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit b/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
index fbcedeca8c..fd7c800fed 100755
--- a/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
+++ b/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
@@ -17,7 +17,7 @@ error_reporting(-1);
 
 if (PHP_VERSION_ID >= 70200) {
     // PHPUnit 6 is required for PHP 7.2+
-    $PHPUNIT_VERSION = getenv('SYMFONY_PHPUNIT_VERSION') ?: '6.3';
+    $PHPUNIT_VERSION = getenv('SYMFONY_PHPUNIT_VERSION') ?: '6.5';
 } elseif (PHP_VERSION_ID >= 50600) {
     // PHPUnit 4 does not support PHP 7
     $PHPUNIT_VERSION = getenv('SYMFONY_PHPUNIT_VERSION') ?: '5.7';
diff --git a/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php b/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
index 6fc94bc8a2..1fb263f00f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
@@ -370,12 +370,12 @@ trait ControllerTrait
     /**
      * Checks the validity of a CSRF token.
      *
-     * @param string $id    The id used when generating the token
-     * @param string $token The actual token sent with the request that should be validated
+     * @param string      $id    The id used when generating the token
+     * @param string|null $token The actual token sent with the request that should be validated
      *
      * @final since version 3.4
      */
-    protected function isCsrfTokenValid(string $id, string $token): bool
+    protected function isCsrfTokenValid(string $id, ?string $token): bool
     {
         if (!$this->container->has('security.csrf.token_manager')) {
             throw new \LogicException('CSRF protection is not enabled in your application. Enable it with the "csrf_protection" key in "config/packages/framework.yaml".');
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ProfilerPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ProfilerPassTest.php
index e064ce9f17..9fcae720b2 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ProfilerPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ProfilerPassTest.php
@@ -12,18 +12,11 @@
 namespace Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\Compiler;
 
 use PHPUnit\Framework\TestCase;
-use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\ProfilerPass;
 
 class ProfilerPassTest extends TestCase
 {
-    private $profilerDefinition;
-
-    protected function setUp()
-    {
-        $this->profilerDefinition = new Definition('ProfilerClass');
-    }
-
     /**
      * Tests that collectors that specify a template but no "id" will throw
      * an exception (both are needed if the template is specified).
@@ -31,17 +24,15 @@ class ProfilerPassTest extends TestCase
      * Thus, a fully-valid tag looks something like this:
      *
      *     <tag name="data_collector" template="YourBundle:Collector:templatename" id="your_collector_name" />
+     *
+     * @expectedException \InvalidArgumentException
      */
     public function testTemplateNoIdThrowsException()
     {
-        // one service, with a template key, but no id
-        $services = array(
-            'my_collector_service' => array(0 => array('template' => 'foo')),
-        );
-
-        $builder = $this->createContainerMock($services);
-
-        $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}('InvalidArgumentException');
+        $builder = new ContainerBuilder();
+        $builder->register('profiler', 'ProfilerClass');
+        $builder->register('my_collector_service')
+            ->addTag('data_collector', array('template' => 'foo'));
 
         $profilerPass = new ProfilerPass();
         $profilerPass->process($builder);
@@ -49,45 +40,19 @@ class ProfilerPassTest extends TestCase
 
     public function testValidCollector()
     {
-        // one service, with a template key, but no id
-        $services = array(
-            'my_collector_service' => array(0 => array('template' => 'foo', 'id' => 'my_collector')),
-        );
-
-        $container = $this->createContainerMock($services);
-
-        // fake the getDefinition() to return a Profiler definition
-        $container->expects($this->atLeastOnce())
-            ->method('getDefinition');
-
-        // assert that the data_collector.templates parameter should be set
-        $container->expects($this->once())
-            ->method('setParameter')
-            ->with('data_collector.templates', array('my_collector_service' => array('my_collector', 'foo')));
+        $container = new ContainerBuilder();
+        $profilerDefinition = $container->register('profiler', 'ProfilerClass');
+        $container->register('my_collector_service')
+            ->addTag('data_collector', array('template' => 'foo', 'id' => 'my_collector'));
 
         $profilerPass = new ProfilerPass();
         $profilerPass->process($container);
 
+        $this->assertSame(array('my_collector_service' => array('my_collector', 'foo')), $container->getParameter('data_collector.templates'));
+
         // grab the method calls off of the "profiler" definition
-        $methodCalls = $this->profilerDefinition->getMethodCalls();
+        $methodCalls = $profilerDefinition->getMethodCalls();
         $this->assertCount(1, $methodCalls);
         $this->assertEquals('add', $methodCalls[0][0]); // grab the method part of the first call
     }
-
-    private function createContainerMock($services)
-    {
-        $container = $this->getMockBuilder('Symfony\Component\DependencyInjection\ContainerBuilder')->setMethods(array('hasDefinition', 'getDefinition', 'findTaggedServiceIds', 'setParameter'))->getMock();
-        $container->expects($this->any())
-            ->method('hasDefinition')
-            ->with($this->equalTo('profiler'))
-            ->will($this->returnValue(true));
-        $container->expects($this->any())
-            ->method('getDefinition')
-            ->will($this->returnValue($this->profilerDefinition));
-        $container->expects($this->atLeastOnce())
-            ->method('findTaggedServiceIds')
-            ->will($this->returnValue($services));
-
-        return $container;
-    }
 }
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/TwigLoaderPassTest.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/TwigLoaderPassTest.php
index 6575f28c97..e142d18a84 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/TwigLoaderPassTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/TwigLoaderPassTest.php
@@ -13,13 +13,14 @@ namespace Symfony\Bundle\TwigBundle\Tests\DependencyInjection\Compiler;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\DependencyInjection\Alias;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Definition;
 use Symfony\Bundle\TwigBundle\DependencyInjection\Compiler\TwigLoaderPass;
 
 class TwigLoaderPassTest extends TestCase
 {
     /**
-     * @var \PHPUnit_Framework_MockObject_MockObject
+     * @var ContainerBuilder
      */
     private $builder;
     /**
@@ -33,64 +34,33 @@ class TwigLoaderPassTest extends TestCase
 
     protected function setUp()
     {
-        $this->builder = $this->getMockBuilder('Symfony\Component\DependencyInjection\ContainerBuilder')->setMethods(array('hasDefinition', 'findTaggedServiceIds', 'setAlias', 'getDefinition'))->getMock();
+        $this->builder = new ContainerBuilder();
+        $this->builder->register('twig');
         $this->chainLoader = new Definition('loader');
         $this->pass = new TwigLoaderPass();
     }
 
-    public function testMapperPassWithOneTaggedLoaders()
+    public function testMapperPassWithOneTaggedLoader()
     {
-        $serviceIds = array(
-            'test_loader_1' => array(
-                array(),
-            ),
-        );
-
-        $this->builder->expects($this->once())
-            ->method('hasDefinition')
-            ->with('twig')
-            ->will($this->returnValue(true));
-        $this->builder->expects($this->once())
-            ->method('findTaggedServiceIds')
-            ->with('twig.loader')
-            ->will($this->returnValue($serviceIds));
-        $this->builder->expects($this->once())
-            ->method('setAlias')
-            ->with('twig.loader', 'test_loader_1')
-            ->will($this->returnValue(new Alias('test_loader_1')));
+        $this->builder->register('test_loader_1')
+            ->addTag('twig.loader');
 
         $this->pass->process($this->builder);
+
+        $this->assertSame('test_loader_1', (string) $this->builder->getAlias('twig.loader'));
     }
 
     public function testMapperPassWithTwoTaggedLoaders()
     {
-        $serviceIds = array(
-            'test_loader_1' => array(
-                array(),
-            ),
-            'test_loader_2' => array(
-                array(),
-            ),
-        );
-
-        $this->builder->expects($this->once())
-            ->method('hasDefinition')
-            ->with('twig')
-            ->will($this->returnValue(true));
-        $this->builder->expects($this->once())
-            ->method('findTaggedServiceIds')
-            ->with('twig.loader')
-            ->will($this->returnValue($serviceIds));
-        $this->builder->expects($this->once())
-            ->method('getDefinition')
-            ->with('twig.loader.chain')
-            ->will($this->returnValue($this->chainLoader));
-        $this->builder->expects($this->once())
-            ->method('setAlias')
-            ->with('twig.loader', 'twig.loader.chain')
-            ->will($this->returnValue(new Alias('twig.loader.chain')));
+        $this->builder->setDefinition('twig.loader.chain', $this->chainLoader);
+        $this->builder->register('test_loader_1')
+            ->addTag('twig.loader');
+        $this->builder->register('test_loader_2')
+            ->addTag('twig.loader');
 
         $this->pass->process($this->builder);
+
+        $this->assertSame('twig.loader.chain', (string) $this->builder->getAlias('twig.loader'));
         $calls = $this->chainLoader->getMethodCalls();
         $this->assertCount(2, $calls);
         $this->assertEquals('addLoader', $calls[0][0]);
@@ -101,33 +71,15 @@ class TwigLoaderPassTest extends TestCase
 
     public function testMapperPassWithTwoTaggedLoadersWithPriority()
     {
-        $serviceIds = array(
-            'test_loader_1' => array(
-                array('priority' => 100),
-            ),
-            'test_loader_2' => array(
-                array('priority' => 200),
-            ),
-        );
-
-        $this->builder->expects($this->once())
-            ->method('hasDefinition')
-            ->with('twig')
-            ->will($this->returnValue(true));
-        $this->builder->expects($this->once())
-            ->method('findTaggedServiceIds')
-            ->with('twig.loader')
-            ->will($this->returnValue($serviceIds));
-        $this->builder->expects($this->once())
-            ->method('getDefinition')
-            ->with('twig.loader.chain')
-            ->will($this->returnValue($this->chainLoader));
-        $this->builder->expects($this->once())
-            ->method('setAlias')
-            ->with('twig.loader', 'twig.loader.chain')
-            ->will($this->returnValue(new Alias('twig.loader.chain')));
+        $this->builder->setDefinition('twig.loader.chain', $this->chainLoader);
+        $this->builder->register('test_loader_1')
+            ->addTag('twig.loader', array('priority' => 100));
+        $this->builder->register('test_loader_2')
+            ->addTag('twig.loader', array('priority' => 200));
 
         $this->pass->process($this->builder);
+
+        $this->assertSame('twig.loader.chain', (string) $this->builder->getAlias('twig.loader'));
         $calls = $this->chainLoader->getMethodCalls();
         $this->assertCount(2, $calls);
         $this->assertEquals('addLoader', $calls[0][0]);
@@ -141,15 +93,6 @@ class TwigLoaderPassTest extends TestCase
      */
     public function testMapperPassWithZeroTaggedLoaders()
     {
-        $this->builder->expects($this->once())
-            ->method('hasDefinition')
-            ->with('twig')
-            ->will($this->returnValue(true));
-        $this->builder->expects($this->once())
-            ->method('findTaggedServiceIds')
-            ->with('twig.loader')
-            ->will($this->returnValue(array()));
-
         $this->pass->process($this->builder);
     }
 }
diff --git a/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php b/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php
index e8563521ba..98d0e52693 100644
--- a/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php
@@ -204,11 +204,12 @@ class TraceableAdapter implements AdapterInterface, PruneableInterface, Resettab
 
     public function getCalls()
     {
-        try {
-            return $this->calls;
-        } finally {
-            $this->calls = array();
-        }
+        return $this->calls;
+    }
+
+    public function clearCalls()
+    {
+        $this->calls = array();
     }
 
     protected function start($name)
diff --git a/src/Symfony/Component/Cache/DataCollector/CacheDataCollector.php b/src/Symfony/Component/Cache/DataCollector/CacheDataCollector.php
index 33e08f167f..e4b08790ad 100644
--- a/src/Symfony/Component/Cache/DataCollector/CacheDataCollector.php
+++ b/src/Symfony/Component/Cache/DataCollector/CacheDataCollector.php
@@ -57,8 +57,7 @@ class CacheDataCollector extends DataCollector implements LateDataCollectorInter
     {
         $this->data = array();
         foreach ($this->instances as $instance) {
-            // Calling getCalls() will clear the calls.
-            $instance->getCalls();
+            $instance->clearCalls();
         }
     }
 
diff --git a/src/Symfony/Component/Cache/Traits/FilesystemTrait.php b/src/Symfony/Component/Cache/Traits/FilesystemTrait.php
index bcb940cb0f..23974b3bc5 100644
--- a/src/Symfony/Component/Cache/Traits/FilesystemTrait.php
+++ b/src/Symfony/Component/Cache/Traits/FilesystemTrait.php
@@ -36,9 +36,9 @@ trait FilesystemTrait
                 continue;
             }
 
-            if ($time >= (int) $expiresAt = fgets($h)) {
+            if (($expiresAt = (int) fgets($h)) && $time >= $expiresAt) {
                 fclose($h);
-                $pruned = isset($expiresAt[0]) && @unlink($file) && !file_exists($file) && $pruned;
+                $pruned = @unlink($file) && !file_exists($file) && $pruned;
             } else {
                 fclose($h);
             }
@@ -60,11 +60,9 @@ trait FilesystemTrait
             if (!file_exists($file) || !$h = @fopen($file, 'rb')) {
                 continue;
             }
-            if ($now >= (int) $expiresAt = fgets($h)) {
+            if (($expiresAt = (int) fgets($h)) && $now >= $expiresAt) {
                 fclose($h);
-                if (isset($expiresAt[0])) {
-                    @unlink($file);
-                }
+                @unlink($file);
             } else {
                 $i = rawurldecode(rtrim(fgets($h)));
                 $value = stream_get_contents($h);
@@ -94,7 +92,7 @@ trait FilesystemTrait
     protected function doSave(array $values, $lifetime)
     {
         $ok = true;
-        $expiresAt = time() + ($lifetime ?: 31557600); // 31557600s = 1 year
+        $expiresAt = $lifetime ? (time() + $lifetime) : 0;
 
         foreach ($values as $id => $value) {
             $ok = $this->write($this->getFile($id, true), $expiresAt."\n".rawurlencode($id)."\n".serialize($value), $expiresAt) && $ok;
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index b3f0a4b51c..d34ee2fb77 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -120,6 +120,7 @@ class PhpDumper extends Dumper
             'debug' => true,
             'hot_path_tag' => 'container.hot_path',
             'inline_class_loader_parameter' => 'container.dumper.inline_class_loader',
+            'build_time' => time(),
         ), $options);
 
         $this->namespace = $options['namespace'];
@@ -223,7 +224,7 @@ EOF;
             array_pop($code);
             $code["Container{$hash}/{$options['class']}.php"] = substr_replace($files[$options['class'].'.php'], "<?php\n\nnamespace Container{$hash};\n", 0, 6);
             $namespaceLine = $this->namespace ? "\nnamespace {$this->namespace};\n" : '';
-            $time = time();
+            $time = $options['build_time'];
             $id = hash('crc32', $hash.$time);
 
             $code[$options['class'].'.php'] = <<<EOF
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Extension/ExtensionTest.php b/src/Symfony/Component/DependencyInjection/Tests/Extension/ExtensionTest.php
index 90852c359e..9f66bfd7c6 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Extension/ExtensionTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Extension/ExtensionTest.php
@@ -12,6 +12,8 @@
 namespace Symfony\Component\DependencyInjection\Tests\Extension;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Extension\Extension;
 
 class ExtensionTest extends TestCase
 {
@@ -20,36 +22,8 @@ class ExtensionTest extends TestCase
      */
     public function testIsConfigEnabledReturnsTheResolvedValue($enabled)
     {
-        $pb = $this->getMockBuilder('Symfony\Component\DependencyInjection\ParameterBag\ParameterBag')
-            ->setMethods(array('resolveValue'))
-            ->getMock()
-        ;
-
-        $container = $this->getMockBuilder('Symfony\Component\DependencyInjection\ContainerBuilder')
-            ->setMethods(array('getParameterBag'))
-            ->getMock()
-        ;
-
-        $pb->expects($this->once())
-            ->method('resolveValue')
-            ->with($this->equalTo($enabled))
-            ->will($this->returnValue($enabled))
-        ;
-
-        $container->expects($this->once())
-            ->method('getParameterBag')
-            ->will($this->returnValue($pb))
-        ;
-
-        $extension = $this->getMockBuilder('Symfony\Component\DependencyInjection\Extension\Extension')
-            ->setMethods(array())
-            ->getMockForAbstractClass()
-        ;
-
-        $r = new \ReflectionMethod('Symfony\Component\DependencyInjection\Extension\Extension', 'isConfigEnabled');
-        $r->setAccessible(true);
-
-        $r->invoke($extension, $container, array('enabled' => $enabled));
+        $extension = new EnableableExtension();
+        $this->assertSame($enabled, $extension->isConfigEnabled(new ContainerBuilder(), array('enabled' => $enabled)));
     }
 
     public function getResolvedEnabledFixtures()
@@ -66,18 +40,20 @@ class ExtensionTest extends TestCase
      */
     public function testIsConfigEnabledOnNonEnableableConfig()
     {
-        $container = $this->getMockBuilder('Symfony\Component\DependencyInjection\ContainerBuilder')
-            ->getMock()
-        ;
+        $extension = new EnableableExtension();
 
-        $extension = $this->getMockBuilder('Symfony\Component\DependencyInjection\Extension\Extension')
-            ->setMethods(array())
-            ->getMockForAbstractClass()
-        ;
-
-        $r = new \ReflectionMethod('Symfony\Component\DependencyInjection\Extension\Extension', 'isConfigEnabled');
-        $r->setAccessible(true);
-
-        $r->invoke($extension, $container, array());
+        $extension->isConfigEnabled(new ContainerBuilder(), array());
+    }
+}
+
+class EnableableExtension extends Extension
+{
+    public function load(array $configs, ContainerBuilder $container)
+    {
+    }
+
+    public function isConfigEnabled(ContainerBuilder $container, array $config)
+    {
+        return parent::isConfigEnabled($container, $config);
     }
 }
diff --git a/src/Symfony/Component/Finder/Finder.php b/src/Symfony/Component/Finder/Finder.php
index 1dab061f87..e7157b1b0a 100644
--- a/src/Symfony/Component/Finder/Finder.php
+++ b/src/Symfony/Component/Finder/Finder.php
@@ -313,6 +313,8 @@ class Finder implements \IteratorAggregate, \Countable
     /**
      * Excludes "hidden" directories and files (starting with a dot).
      *
+     * This option is enabled by default.
+     *
      * @param bool $ignoreDotFiles Whether to exclude "hidden" files or not
      *
      * @return $this
@@ -333,6 +335,8 @@ class Finder implements \IteratorAggregate, \Countable
     /**
      * Forces the finder to ignore version control directories.
      *
+     * This option is enabled by default.
+     *
      * @param bool $ignoreVCS Whether to exclude VCS files or not
      *
      * @return $this
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php b/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
index 9cd910ad18..8cb19c4790 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
@@ -22,6 +22,7 @@ use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
 use Symfony\Component\DependencyInjection\LazyProxy\ProxyHelper;
 use Symfony\Component\DependencyInjection\Reference;
 use Symfony\Component\DependencyInjection\TypedReference;
+use Symfony\Component\HttpFoundation\Request;
 
 /**
  * Creates the service-locators required by ServiceValueResolver.
@@ -148,6 +149,10 @@ class RegisterControllerArgumentLocatorsPass implements CompilerPassInterface
                         continue;
                     }
 
+                    if (Request::class === $type) {
+                        continue;
+                    }
+
                     if ($type && !$p->isOptional() && !$p->allowsNull() && !class_exists($type) && !interface_exists($type, false)) {
                         $message = sprintf('Cannot determine controller argument for "%s::%s()": the $%s argument is type-hinted with the non-existent class or interface: "%s".', $class, $r->name, $p->name, $type);
 
diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 9632ca7e4a..61c35201a8 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -693,6 +693,7 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
             'file' => $cache->getPath(),
             'as_files' => true,
             'debug' => $this->debug,
+            'build_time' => $container->hasParameter('kernel.container_build_time') ? $container->getParameter('kernel.container_build_time') : time(),
         ));
 
         $rootCode = array_pop($content);
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/MergeExtensionConfigurationPassTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/MergeExtensionConfigurationPassTest.php
index 81fc8b455d..ae421d919b 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/MergeExtensionConfigurationPassTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/MergeExtensionConfigurationPassTest.php
@@ -12,44 +12,39 @@
 namespace Symfony\Component\HttpKernel\Tests\DependencyInjection;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 use Symfony\Component\HttpKernel\DependencyInjection\MergeExtensionConfigurationPass;
 
 class MergeExtensionConfigurationPassTest extends TestCase
 {
     public function testAutoloadMainExtension()
     {
-        $container = $this->getMockBuilder('Symfony\\Component\\DependencyInjection\\ContainerBuilder')->setMethods(array('getExtensionConfig', 'loadFromExtension', 'getParameterBag', 'getDefinitions', 'getAliases', 'getExtensions'))->getMock();
-        $params = $this->getMockBuilder('Symfony\\Component\\DependencyInjection\\ParameterBag\\ParameterBag')->getMock();
+        $container = new ContainerBuilder();
+        $container->registerExtension(new LoadedExtension());
+        $container->registerExtension(new NotLoadedExtension());
+        $container->loadFromExtension('loaded', array());
 
-        $container->expects($this->at(0))
-            ->method('getExtensionConfig')
-            ->with('loaded')
-            ->will($this->returnValue(array(array())));
-        $container->expects($this->at(1))
-            ->method('getExtensionConfig')
-            ->with('notloaded')
-            ->will($this->returnValue(array()));
-        $container->expects($this->once())
-            ->method('loadFromExtension')
-            ->with('notloaded', array());
-
-        $container->expects($this->any())
-            ->method('getParameterBag')
-            ->will($this->returnValue($params));
-        $params->expects($this->any())
-            ->method('all')
-            ->will($this->returnValue(array()));
-        $container->expects($this->any())
-            ->method('getDefinitions')
-            ->will($this->returnValue(array()));
-        $container->expects($this->any())
-            ->method('getAliases')
-            ->will($this->returnValue(array()));
-        $container->expects($this->any())
-            ->method('getExtensions')
-            ->will($this->returnValue(array()));
-
-        $configPass = new MergeExtensionConfigurationPass(array('loaded', 'notloaded'));
+        $configPass = new MergeExtensionConfigurationPass(array('loaded', 'not_loaded'));
         $configPass->process($container);
+
+        $this->assertTrue($container->hasDefinition('loaded.foo'));
+        $this->assertTrue($container->hasDefinition('not_loaded.bar'));
+    }
+}
+
+class LoadedExtension extends Extension
+{
+    public function load(array $configs, ContainerBuilder $container)
+    {
+        $container->register('loaded.foo');
+    }
+}
+
+class NotLoadedExtension extends Extension
+{
+    public function load(array $configs, ContainerBuilder $container)
+    {
+        $container->register('not_loaded.bar');
     }
 }
diff --git a/src/Symfony/Component/Lock/Lock.php b/src/Symfony/Component/Lock/Lock.php
index e906554f31..7936a5f7b6 100644
--- a/src/Symfony/Component/Lock/Lock.php
+++ b/src/Symfony/Component/Lock/Lock.php
@@ -89,7 +89,7 @@ final class Lock implements LockInterface, LoggerAwareInterface
             return true;
         } catch (LockConflictedException $e) {
             $this->dirty = false;
-            $this->logger->warning('Failed to acquire the "{resource}" lock. Someone else already acquired the lock.', array('resource' => $this->key));
+            $this->logger->notice('Failed to acquire the "{resource}" lock. Someone else already acquired the lock.', array('resource' => $this->key));
 
             if ($blocking) {
                 throw $e;
@@ -97,7 +97,7 @@ final class Lock implements LockInterface, LoggerAwareInterface
 
             return false;
         } catch (\Exception $e) {
-            $this->logger->warning('Failed to acquire the "{resource}" lock.', array('resource' => $this->key, 'exception' => $e));
+            $this->logger->notice('Failed to acquire the "{resource}" lock.', array('resource' => $this->key, 'exception' => $e));
             throw new LockAcquiringException(sprintf('Failed to acquire the "%s" lock.', $this->key), 0, $e);
         }
     }
@@ -123,10 +123,10 @@ final class Lock implements LockInterface, LoggerAwareInterface
             $this->logger->info('Expiration defined for "{resource}" lock for "{ttl}" seconds.', array('resource' => $this->key, 'ttl' => $this->ttl));
         } catch (LockConflictedException $e) {
             $this->dirty = false;
-            $this->logger->warning('Failed to define an expiration for the "{resource}" lock, someone else acquired the lock.', array('resource' => $this->key));
+            $this->logger->notice('Failed to define an expiration for the "{resource}" lock, someone else acquired the lock.', array('resource' => $this->key));
             throw $e;
         } catch (\Exception $e) {
-            $this->logger->warning('Failed to define an expiration for the "{resource}" lock.', array('resource' => $this->key, 'exception' => $e));
+            $this->logger->notice('Failed to define an expiration for the "{resource}" lock.', array('resource' => $this->key, 'exception' => $e));
             throw new LockAcquiringException(sprintf('Failed to define an expiration for the "%s" lock.', $this->key), 0, $e);
         }
     }
@@ -148,7 +148,7 @@ final class Lock implements LockInterface, LoggerAwareInterface
         $this->dirty = false;
 
         if ($this->store->exists($this->key)) {
-            $this->logger->warning('Failed to release the "{resource}" lock.', array('resource' => $this->key));
+            $this->logger->notice('Failed to release the "{resource}" lock.', array('resource' => $this->key));
             throw new LockReleasingException(sprintf('Failed to release the "%s" lock.', $this->key));
         }
     }
diff --git a/src/Symfony/Component/Lock/Tests/LockTest.php b/src/Symfony/Component/Lock/Tests/LockTest.php
index ece5cf6679..7913644b9a 100644
--- a/src/Symfony/Component/Lock/Tests/LockTest.php
+++ b/src/Symfony/Component/Lock/Tests/LockTest.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\Lock\Tests;
 
 use PHPUnit\Framework\TestCase;
+use Psr\Log\LoggerInterface;
 use Symfony\Component\Lock\Exception\LockConflictedException;
 use Symfony\Component\Lock\Key;
 use Symfony\Component\Lock\Lock;
@@ -192,6 +193,35 @@ class LockTest extends TestCase
         $lock->release();
     }
 
+    /**
+     * @expectedException \Symfony\Component\Lock\Exception\LockReleasingException
+     */
+    public function testReleaseThrowsAndLog()
+    {
+        $key = new Key(uniqid(__METHOD__, true));
+        $store = $this->getMockBuilder(StoreInterface::class)->getMock();
+        $logger = $this->getMockBuilder(LoggerInterface::class)->getMock();
+        $lock = new Lock($key, $store, 10, true);
+        $lock->setLogger($logger);
+
+        $logger->expects($this->atLeastOnce())
+            ->method('notice')
+            ->with('Failed to release the "{resource}" lock.', array('resource' => $key));
+
+        $store
+            ->expects($this->once())
+            ->method('delete')
+            ->with($key);
+
+        $store
+            ->expects($this->once())
+            ->method('exists')
+            ->with($key)
+            ->willReturn(true);
+
+        $lock->release();
+    }
+
     /**
      * @dataProvider provideExpiredDates
      */
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php
index 89f2b10e22..182fcd8f23 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php
@@ -62,7 +62,7 @@ class ProjectUrlMatcher extends Symfony\Component\Routing\Matcher\UrlMatcher
         not_get_and_head:
 
         // post_and_head
-        if ('/post_and_get' === $pathinfo) {
+        if ('/post_and_head' === $pathinfo) {
             if (!in_array($requestMethod, array('POST', 'HEAD'))) {
                 $allow = array_merge($allow, array('POST', 'HEAD'));
                 goto not_post_and_head;
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
index e4c18c47b1..f29a6d6a30 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
@@ -354,7 +354,7 @@ class PhpMatcherDumperTest extends TestCase
             array('GET', 'HEAD')
         ));
         $headMatchCasesCollection->add('post_and_head', new Route(
-            '/post_and_get',
+            '/post_and_head',
             array(),
             array(),
             array(),
diff --git a/src/Symfony/Component/Serializer/CHANGELOG.md b/src/Symfony/Component/Serializer/CHANGELOG.md
index 8253276c99..c680a19b16 100644
--- a/src/Symfony/Component/Serializer/CHANGELOG.md
+++ b/src/Symfony/Component/Serializer/CHANGELOG.md
@@ -30,6 +30,7 @@ CHANGELOG
  * added getter for extra attributes in `ExtraAttributesException`
  * improved `CsvEncoder` to handle variable nested structures
  * CSV headers can be passed to the `CsvEncoder` via the `csv_headers` serialization context variable 
+ * added `$context` when checking for encoding, decoding and normalizing in `Serializer`
 
 3.3.0
 -----
diff --git a/src/Symfony/Component/Serializer/Serializer.php b/src/Symfony/Component/Serializer/Serializer.php
index 3c73ec3b20..92975a35bb 100644
--- a/src/Symfony/Component/Serializer/Serializer.php
+++ b/src/Symfony/Component/Serializer/Serializer.php
@@ -98,11 +98,11 @@ class Serializer implements SerializerInterface, ContextAwareNormalizerInterface
      */
     final public function serialize($data, $format, array $context = array())
     {
-        if (!$this->supportsEncoding($format)) {
+        if (!$this->supportsEncoding($format, $context)) {
             throw new NotEncodableValueException(sprintf('Serialization for the format %s is not supported', $format));
         }
 
-        if ($this->encoder->needsNormalization($format)) {
+        if ($this->encoder->needsNormalization($format, $context)) {
             $data = $this->normalize($data, $format, $context);
         }
 
@@ -114,7 +114,7 @@ class Serializer implements SerializerInterface, ContextAwareNormalizerInterface
      */
     final public function deserialize($data, $type, $format, array $context = array())
     {
-        if (!$this->supportsDecoding($format)) {
+        if (!$this->supportsDecoding($format, $context)) {
             throw new NotEncodableValueException(sprintf('Deserialization for the format %s is not supported', $format));
         }
 
diff --git a/src/Symfony/Component/Yaml/Dumper.php b/src/Symfony/Component/Yaml/Dumper.php
index 254009733e..6681379816 100644
--- a/src/Symfony/Component/Yaml/Dumper.php
+++ b/src/Symfony/Component/Yaml/Dumper.php
@@ -63,7 +63,10 @@ class Dumper
 
             foreach ($input as $key => $value) {
                 if ($inline >= 1 && Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK & $flags && is_string($value) && false !== strpos($value, "\n") && false === strpos($value, "\r\n")) {
-                    $output .= sprintf("%s%s%s |\n", $prefix, $dumpAsMap ? Inline::dump($key, $flags).':' : '-', '');
+                    // If the first line starts with a space character, the spec requires a blockIndicationIndicator
+                    // http://www.yaml.org/spec/1.2/spec.html#id2793979
+                    $blockIndentationIndicator = (' ' === substr($value, 0, 1)) ? (string) $this->indentation : '';
+                    $output .= sprintf("%s%s%s |%s\n", $prefix, $dumpAsMap ? Inline::dump($key, $flags).':' : '-', '', $blockIndentationIndicator);
 
                     foreach (preg_split('/\n|\r\n/', $value) as $row) {
                         $output .= sprintf("%s%s%s\n", $prefix, str_repeat(' ', $this->indentation), $row);
diff --git a/src/Symfony/Component/Yaml/Tests/DumperTest.php b/src/Symfony/Component/Yaml/Tests/DumperTest.php
index edcb734440..0a8c023d01 100644
--- a/src/Symfony/Component/Yaml/Tests/DumperTest.php
+++ b/src/Symfony/Component/Yaml/Tests/DumperTest.php
@@ -388,6 +388,17 @@ YAML;
         $this->assertSame(file_get_contents(__DIR__.'/Fixtures/multiple_lines_as_literal_block.yml'), $this->dumper->dump($data, 2, 0, Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK));
     }
 
+    public function testDumpMultiLineStringAsScalarBlockWhenFirstLineHasLeadingSpace()
+    {
+        $data = array(
+            'data' => array(
+                'multi_line' => "    the first line has leading spaces\nThe second line does not.",
+            ),
+        );
+
+        $this->assertSame(file_get_contents(__DIR__.'/Fixtures/multiple_lines_as_literal_block_leading_space_in_first_line.yml'), $this->dumper->dump($data, 2, 0, Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK));
+    }
+
     public function testCarriageReturnIsMaintainedWhenDumpingAsMultiLineLiteralBlock()
     {
         $this->assertSame("- \"a\\r\\nb\\nc\"\n", $this->dumper->dump(array("a\r\nb\nc"), 2, 0, Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK));
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/multiple_lines_as_literal_block_leading_space_in_first_line.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/multiple_lines_as_literal_block_leading_space_in_first_line.yml
new file mode 100644
index 0000000000..3f2dedd10e
--- /dev/null
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/multiple_lines_as_literal_block_leading_space_in_first_line.yml
@@ -0,0 +1,4 @@
+data:
+    multi_line: |4
+            the first line has leading spaces
+        The second line does not.