diff -u b/core/modules/book/src/Form/BookOutlineForm.php b/core/modules/book/src/Form/BookOutlineForm.php
--- b/core/modules/book/src/Form/BookOutlineForm.php
+++ b/core/modules/book/src/Form/BookOutlineForm.php
@@ -8,7 +8,6 @@
 use Drupal\Core\Entity\EntityRepositoryInterface;
 use Drupal\Core\Entity\EntityTypeBundleInfoInterface;
 use Drupal\Core\Form\FormStateInterface;
-use Drupal\Core\Url;
 use Drupal\node\Entity\Node;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
diff -u b/core/modules/forum/src/Breadcrumb/ForumListingBreadcrumbBuilder.php b/core/modules/forum/src/Breadcrumb/ForumListingBreadcrumbBuilder.php
--- b/core/modules/forum/src/Breadcrumb/ForumListingBreadcrumbBuilder.php
+++ b/core/modules/forum/src/Breadcrumb/ForumListingBreadcrumbBuilder.php
@@ -42,7 +42,7 @@
             'taxonomy_term' => $parent->id(),
           ],
             [
-              'language' => $parent->language()
+              'language' => $parent->language(),
             ]
           ));
         }
diff -u b/core/modules/forum/tests/src/Unit/Breadcrumb/ForumListingBreadcrumbBuilderTest.php b/core/modules/forum/tests/src/Unit/Breadcrumb/ForumListingBreadcrumbBuilderTest.php
--- b/core/modules/forum/tests/src/Unit/Breadcrumb/ForumListingBreadcrumbBuilderTest.php
+++ b/core/modules/forum/tests/src/Unit/Breadcrumb/ForumListingBreadcrumbBuilderTest.php
@@ -7,7 +7,6 @@
 use Drupal\forum\Breadcrumb\ForumListingBreadcrumbBuilder;
 use Drupal\taxonomy\TermStorageInterface;
 use Drupal\Tests\UnitTestCase;
-use Prophecy\Argument;
 use Symfony\Component\DependencyInjection\Container;
 
 /**
diff -u b/core/modules/menu_link_content/src/Form/MenuLinkContentDeleteForm.php b/core/modules/menu_link_content/src/Form/MenuLinkContentDeleteForm.php
--- b/core/modules/menu_link_content/src/Form/MenuLinkContentDeleteForm.php
+++ b/core/modules/menu_link_content/src/Form/MenuLinkContentDeleteForm.php
@@ -3,7 +3,6 @@
 namespace Drupal\menu_link_content\Form;
 
 use Drupal\Core\Entity\ContentEntityDeleteForm;
-use Drupal\Core\Url;
 use Drupal\system\Entity\Menu;
 
 /**
only in patch2:
unchanged:
--- a/core/modules/forum/tests/src/Unit/Breadcrumb/ForumBreadcrumbBuilderBaseTest.php
+++ b/core/modules/forum/tests/src/Unit/Breadcrumb/ForumBreadcrumbBuilderBaseTest.php
@@ -44,6 +44,7 @@ public function testConstructor() {
     );
     $forum_manager = $this->createMock('Drupal\forum\ForumManagerInterface');
     $translation_manager = $this->createMock('Drupal\Core\StringTranslation\TranslationInterface');
+    $entity_repository = $this->createMock('Drupal\Core\Entity\EntityRepositoryInterface');
 
     // Make an object to test.
     $builder = $this->getMockForAbstractClass(
@@ -54,6 +55,7 @@ public function testConstructor() {
         $config_factory,
         $forum_manager,
         $translation_manager,
+        $entity_repository,
       ]
     );
 
@@ -115,6 +117,8 @@ public function testBuild() {
         ['taxonomy_vocabulary', $vocab_storage],
       ]));
 
+    $entity_repository = $this->createMock('Drupal\Core\Entity\EntityRepositoryInterface');
+
     $config_factory = $this->getConfigFactoryStub(
       [
         'forum.settings' => [
@@ -132,6 +136,7 @@ public function testBuild() {
         $config_factory,
         $forum_manager,
         $translation_manager,
+        $entity_repository,
       ]
     );
 
only in patch2:
unchanged:
--- a/core/modules/language/tests/src/Functional/LanguageNegotiationInfoTest.php
+++ b/core/modules/language/tests/src/Functional/LanguageNegotiationInfoTest.php
@@ -121,7 +121,10 @@ public function testInfoAlterations() {
     }
 
     // Check language negotiation results.
-    $this->drupalGet('');
+    // We won't call here for '' root, because this would redirect to user page,
+    // and the language of the link (that means interface as well) will be set
+    // to LanguageInterface::TYPE_CONTENT. Instead, any 404 page will work.
+    $this->drupalGet('page_not_found');
     $last = $this->container->get('state')->get('language_test.language_negotiation_last');
     foreach ($this->languageManager()->getDefinedLanguageTypes() as $type) {
       $langcode = $last[$type];
only in patch2:
unchanged:
--- a/core/modules/user/tests/src/Kernel/Controller/UserControllerTest.php
+++ b/core/modules/user/tests/src/Kernel/Controller/UserControllerTest.php
@@ -3,6 +3,8 @@
 namespace Drupal\Tests\user\Kernel\Controller;
 
 use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\Flood\FloodInterface;
+use Drupal\Core\Language\LanguageManagerInterface;
 use Drupal\KernelTests\KernelTestBase;
 use Drupal\user\Controller\UserController;
 use Drupal\user\UserDataInterface;
@@ -24,11 +26,16 @@ public function testConstructorDeprecations() {
     $user_storage = $this->prophesize(UserStorageInterface::class);
     $user_data = $this->prophesize(UserDataInterface::class);
     $logger = $this->prophesize(LoggerInterface::class);
+    $flood = $this->prophesize(FloodInterface::class);
+    $language_manager = $this->prophesize(LanguageManagerInterface::class);
+
     $controller = new UserController(
       $date_formatter->reveal(),
       $user_storage->reveal(),
       $user_data->reveal(),
-      $logger->reveal()
+      $logger->reveal(),
+      NULL,
+      $language_manager->reveal()
     );
     $this->assertNotNull($controller);
   }