Update to Drupal 8.0.0-beta15. For more information, see: https://www.drupal.org/node/2563023

core/profiles/minimal/config/install/block.block.stark_local_actions.yml

@@ -0,0 +1,15 @@
+id: stark_local_actions
+theme: stark
+weight: -10
+status: true
+langcode: en
+region: content
+plugin: local_actions_block
+settings:
+  id: local_actions_block
+  label: Primary admin actions
+  label_display: '0'
+dependencies:
+  theme:
+    - stark
+visibility: {  }

core/profiles/minimal/config/install/block.block.stark_local_tasks.yml

@@ -0,0 +1,15 @@
+id: stark_local_tasks
+theme: stark
+weight: -20
+status: true
+langcode: en
+region: content
+plugin: local_tasks_block
+settings:
+  id: local_tasks_block
+  label: Tabs
+  label_display: '0'
+dependencies:
+  theme:
+    - stark
+visibility: {  }

core/profiles/minimal/src/Tests/MinimalTest.php

@@ -39,5 +39,8 @@ class MinimalTest extends WebTestBase {
     $this->drupalLogin($this->rootUser);
     $this->drupalGet('update.php/selection');
     $this->assertText('No pending updates.');
+
+    // Ensure that there are no pending entity updates after installation.
+    $this->assertFalse($this->container->get('entity.definition_update_manager')->needsUpdates(), 'After installation, entity schema is up to date.');
   }
 }