diff -u b/composer.lock b/composer.lock
--- b/composer.lock
+++ b/composer.lock
@@ -2952,15 +2952,9 @@
             "version": "8.2.12",
             "source": {
                 "type": "git",
-                "url": "https://github.com/klausi/coder.git",
+                "url": "https://git.drupal.org/project/coder.git",
                 "reference": "984c54a7b1e8f27ff1c32348df69712afd86b17f"
             },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/klausi/coder/zipball/984c54a7b1e8f27ff1c32348df69712afd86b17f",
-                "reference": "984c54a7b1e8f27ff1c32348df69712afd86b17f",
-                "shasum": ""
-            },
             "require": {
                 "ext-mbstring": "*",
                 "php": ">=5.4.0",
only in patch2:
unchanged:
--- a/core/lib/Drupal/Core/DependencyInjection/ContainerBuilder.php
+++ b/core/lib/Drupal/Core/DependencyInjection/ContainerBuilder.php
@@ -85,7 +85,10 @@ public function register($id, $class = null) {
     if (strtolower($id) !== $id) {
       throw new \InvalidArgumentException("Service ID names must be lowercase: $id");
     }
-    return parent::register($id, $class);
+    $definition = parent::register($id, $class);
+    // As of Symfony 3.4 all services are private by default.
+    $definition->setPublic(TRUE);
+    return $definition;
   }
 
   /**
only in patch2:
unchanged:
--- a/core/lib/Drupal/Core/DependencyInjection/YamlFileLoader.php
+++ b/core/lib/Drupal/Core/DependencyInjection/YamlFileLoader.php
@@ -158,6 +158,8 @@ private function parseDefinition($id, $service, $file)
             $definition = new DefinitionDecorator($service['parent']);
         } else {
             $definition = new Definition();
+            // As of Symfony 3.4 all services are private by default.
+            $definition->setPublic(TRUE);
         }
 
         if (isset($service['class'])) {
only in patch2:
unchanged:
--- a/sites/default/default.services.yml
+++ b/sites/default/default.services.yml
@@ -126,15 +126,13 @@ parameters:
   # Not recommended in production environments
   # @default false
   http.response.debug_cacheability_headers: false
-  factory.keyvalue:
-    {}
+  factory.keyvalue: {}
     # Default key/value storage service to use.
     # @default keyvalue.database
     # default: keyvalue.database
     # Collection-specific overrides.
     # state: keyvalue.database
-  factory.keyvalue.expirable:
-    {}
+  factory.keyvalue.expirable: {}
     # Default key/value expirable storage service to use.
     # @default keyvalue.database.expirable
     # default: keyvalue.database.expirable