Update to Drupal 8.1.2. For more information, see https://www.drupal.org/project/drupal/releases/8.1.2

core/lib/Drupal/Core/Queue/Batch.php

@@ -60,4 +60,5 @@ class Batch extends DatabaseQueue {
     }
     return $result;
   }
+
 }

core/lib/Drupal/Core/Queue/BatchMemory.php

@@ -46,4 +46,5 @@ class BatchMemory extends Memory {
     }
     return $result;
   }
+
 }

core/lib/Drupal/Core/Queue/Memory.php

@@ -103,4 +103,5 @@ class Memory implements QueueInterface {
     $this->queue = array();
     $this->idSequence = 0;
   }
+
 }

core/lib/Drupal/Core/Queue/QueueDatabaseFactory.php

@@ -38,4 +38,5 @@ class QueueDatabaseFactory {
   public function get($name) {
     return new DatabaseQueue($name, $this->connection);
   }
+
 }

core/lib/Drupal/Core/Queue/QueueFactory.php

@@ -63,4 +63,5 @@ class QueueFactory implements ContainerAwareInterface {
     }
     return $this->queues[$name];
   }
+
 }

core/lib/Drupal/Core/Queue/QueueInterface.php

@@ -106,4 +106,5 @@ interface QueueInterface {
    * Deletes a queue and every item in the queue.
    */
   public function deleteQueue();
+
 }