diff --git a/src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_4_layout.html.twig b/src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_4_layout.html.twig
index a1e986a39a..92a857ec82 100644
--- a/src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_4_layout.html.twig
+++ b/src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_4_layout.html.twig
@@ -103,6 +103,10 @@
     {% if type is not defined or type != 'hidden' %}
         {%- set attr = attr|merge({class: (attr.class|default('') ~ ' form-control' ~ (type|default('') == 'file' ? '-file' : ''))|trim}) -%}
     {% endif %}
+    {%- if type is defined and (type == 'range' or type == 'color') %}
+        {# Attribute "required" is not supported #}
+        {%- set required = false -%}
+    {% endif %}
     {{- parent() -}}
 {%- endblock form_widget_simple %}
 
diff --git a/src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_base_layout.html.twig b/src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_base_layout.html.twig
index 71aedf99ad..4ad6539141 100644
--- a/src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_base_layout.html.twig
+++ b/src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_base_layout.html.twig
@@ -40,6 +40,16 @@
         <div {{ block('widget_container_attributes') }}>
             {{- form_errors(form.date) -}}
             {{- form_errors(form.time) -}}
+
+            <div class="sr-only">
+                {%- if form.date.year is defined %}{{ form_label(form.date.year) }}{% endif -%}
+                {%- if form.date.month is defined %}{{ form_label(form.date.month) }}{% endif -%}
+                {%- if form.date.day is defined %}{{ form_label(form.date.day) }}{% endif -%}
+                {%- if form.time.hour is defined %}{{ form_label(form.time.hour) }}{% endif -%}
+                {%- if form.time.minute is defined %}{{ form_label(form.time.minute) }}{% endif -%}
+                {%- if form.time.second is defined %}{{ form_label(form.time.second) }}{% endif -%}
+            </div>
+
             {{- form_widget(form.date, { datetime: true } ) -}}
             {{- form_widget(form.time, { datetime: true } ) -}}
         </div>
@@ -54,6 +64,12 @@
         {%- if datetime is not defined or not datetime -%}
             <div {{ block('widget_container_attributes') -}}>
         {%- endif %}
+            <div class="sr-only">
+                {{ form_label(form.year) }}
+                {{ form_label(form.month) }}
+                {{ form_label(form.day) }}
+            </div>
+
             {{- date_pattern|replace({
                 '{{ year }}': form_widget(form.year),
                 '{{ month }}': form_widget(form.month),
@@ -73,7 +89,10 @@
         {%- if datetime is not defined or false == datetime -%}
             <div {{ block('widget_container_attributes') -}}>
         {%- endif -%}
-        {{- form_widget(form.hour) }}{% if with_minutes %}:{{ form_widget(form.minute) }}{% endif %}{% if with_seconds %}:{{ form_widget(form.second) }}{% endif %}
+        <div class="sr-only">{{ form_label(form.hour) }}</div>
+        {{- form_widget(form.hour) -}}
+        {%- if with_minutes -%}:<div class="sr-only">{{ form_label(form.minute) }}</div>{{ form_widget(form.minute) }}{%- endif -%}
+        {%- if with_seconds -%}:<div class="sr-only">{{ form_label(form.second) }}</div>{{ form_widget(form.second) }}{%- endif -%}
         {%- if datetime is not defined or false == datetime -%}
             </div>
         {%- endif -%}
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Application.php b/src/Symfony/Bundle/FrameworkBundle/Console/Application.php
index bcdec7eee3..2be849db17 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Application.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Application.php
@@ -65,6 +65,8 @@ class Application extends BaseApplication
 
         $this->setDispatcher($this->kernel->getContainer()->get('event_dispatcher'));
 
+        $this->registerCommands();
+
         if ($this->registrationErrors) {
             $this->renderRegistrationErrors($input, $output);
         }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/ApplicationTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/ApplicationTest.php
index d06e98be77..c977bb13a1 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/ApplicationTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/ApplicationTest.php
@@ -165,6 +165,33 @@ class ApplicationTest extends TestCase
         $this->assertContains('fine', $output);
     }
 
+    public function testRegistrationErrorsAreDisplayedOnCommandNotFound()
+    {
+        $container = new ContainerBuilder();
+        $container->register('event_dispatcher', EventDispatcher::class);
+
+        $kernel = $this->getMockBuilder(KernelInterface::class)->getMock();
+        $kernel
+            ->method('getBundles')
+            ->willReturn(array($this->createBundleMock(
+                array((new Command(null))->setCode(function (InputInterface $input, OutputInterface $output) { $output->write('fine'); }))
+            )));
+        $kernel
+            ->method('getContainer')
+            ->willReturn($container);
+
+        $application = new Application($kernel);
+        $application->setAutoExit(false);
+
+        $tester = new ApplicationTester($application);
+        $tester->run(array('command' => 'fine'));
+        $output = $tester->getDisplay();
+
+        $this->assertSame(1, $tester->getStatusCode());
+        $this->assertContains('Some commands could not be registered:', $output);
+        $this->assertContains('Command "fine" is not defined.', $output);
+    }
+
     private function getKernel(array $bundles, $useDispatcher = false)
     {
         $container = $this->getMockBuilder('Symfony\Component\DependencyInjection\ContainerInterface')->getMock();
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RouterTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RouterTest.php
index e0548078fc..ba5db79405 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RouterTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RouterTest.php
@@ -220,16 +220,17 @@ class RouterTest extends TestCase
 
     public function testGetRouteCollectionAddsContainerParametersResource()
     {
-        $routeCollection = $this->getMockBuilder(RouteCollection::class)->getMock();
-        $routeCollection->method('getIterator')->willReturn(new \ArrayIterator(array(new Route('/%locale%'))));
-        $routeCollection->expects($this->once())->method('addResource')->with(new ContainerParametersResource(array('locale' => 'en')));
+        $routeCollection = new RouteCollection();
+        $routeCollection->add('foo', new Route('/%locale%'));
 
         $sc = $this->getServiceContainer($routeCollection);
         $sc->setParameter('locale', 'en');
 
         $router = new Router($sc, 'foo');
 
-        $router->getRouteCollection();
+        $routeCollection = $router->getRouteCollection();
+
+        $this->assertEquals(array(new ContainerParametersResource(array('locale' => 'en'))), $routeCollection->getResources());
     }
 
     public function getNonStringValues()
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig b/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig
index 5c2be8c74c..a59e7811d6 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig
+++ b/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig
@@ -122,6 +122,11 @@
                 return;
             }
 
+            var nbOfAjaxRequest = tbody.rows.count();
+            if (nbOfAjaxRequest >= 100) {
+                tbody.deleteRow(nbOfAjaxRequest - 1);
+            }
+
             var request = requestStack[index];
             pendingRequests++;
             var row = document.createElement('tr');
diff --git a/src/Symfony/Component/Debug/Exception/FatalThrowableError.php b/src/Symfony/Component/Debug/Exception/FatalThrowableError.php
index 34f43b17b1..fafc92263e 100644
--- a/src/Symfony/Component/Debug/Exception/FatalThrowableError.php
+++ b/src/Symfony/Component/Debug/Exception/FatalThrowableError.php
@@ -36,7 +36,8 @@ class FatalThrowableError extends FatalErrorException
             $e->getCode(),
             $severity,
             $e->getFile(),
-            $e->getLine()
+            $e->getLine(),
+            $e->getPrevious()
         );
 
         $this->setTrace($e->getTrace());
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/DumpedRedirectableUrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/DumpedRedirectableUrlMatcherTest.php
index 28f65aeeb5..cfbb524d3a 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/DumpedRedirectableUrlMatcherTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/DumpedRedirectableUrlMatcherTest.php
@@ -25,7 +25,7 @@ class DumpedRedirectableUrlMatcherTest extends RedirectableUrlMatcherTest
 
         $class = 'DumpedRedirectableUrlMatcher'.++$i;
         $dumper = new PhpMatcherDumper($routes);
-        $dumpedRoutes = eval('?>'.$dumper->dump(array('class' => $class, 'base_class' => 'Symfony\Component\Routing\Tests\Matcher\TestDumpedRedirectableUrlMatcher')));
+        eval('?>'.$dumper->dump(array('class' => $class, 'base_class' => 'Symfony\Component\Routing\Tests\Matcher\TestDumpedRedirectableUrlMatcher')));
 
         return $this->getMockBuilder($class)
             ->setConstructorArgs(array($context ?: new RequestContext()))
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/DumpedUrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/DumpedUrlMatcherTest.php
index e36a0220d9..880b2b13b1 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/DumpedUrlMatcherTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/DumpedUrlMatcherTest.php
@@ -41,7 +41,7 @@ class DumpedUrlMatcherTest extends UrlMatcherTest
 
         $class = 'DumpedUrlMatcher'.++$i;
         $dumper = new PhpMatcherDumper($routes);
-        $dumpedRoutes = eval('?>'.$dumper->dump(array('class' => $class)));
+        eval('?>'.$dumper->dump(array('class' => $class)));
 
         return new $class($context ?: new RequestContext());
     }
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/RedirectableUrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/RedirectableUrlMatcherTest.php
index 5f226271bf..7984391e12 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/RedirectableUrlMatcherTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/RedirectableUrlMatcherTest.php
@@ -17,7 +17,7 @@ use Symfony\Component\Routing\RequestContext;
 
 class RedirectableUrlMatcherTest extends UrlMatcherTest
 {
-    public function testRedirectWhenNoSlash()
+    public function testMissingTrailingSlash()
     {
         $coll = new RouteCollection();
         $coll->add('foo', new Route('/foo/'));
@@ -56,7 +56,7 @@ class RedirectableUrlMatcherTest extends UrlMatcherTest
         $matcher->match('/foo');
     }
 
-    public function testNoSchemaRedirectIfOnOfMultipleSchemesMatches()
+    public function testNoSchemaRedirectIfOneOfMultipleSchemesMatches()
     {
         $coll = new RouteCollection();
         $coll->add('foo', new Route('/foo', array(), array(), array(), '', array('https', 'http')));