diff -u b/core/modules/migrate/tests/src/Unit/destination/EntityFileTest.php b/core/modules/migrate/tests/src/Unit/destination/EntityFileTest.php
--- b/core/modules/migrate/tests/src/Unit/destination/EntityFileTest.php
+++ b/core/modules/migrate/tests/src/Unit/destination/EntityFileTest.php
@@ -43,7 +43,6 @@
     $this->destination->streamWrapperManager = \Drupal::getContainer()->get('stream_wrapper_manager');
     $this->destination->fileSystem = \Drupal::getContainer()->get('file_system');
 
-    // $this->installConfig(['system', 'file']);
     file_put_contents('/tmp/test-file.jpg', '');
   }
 
diff -u b/core/modules/migrate_drupal/src/Tests/d6/MigrateFileTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateFileTest.php
--- b/core/modules/migrate_drupal/src/Tests/d6/MigrateFileTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateFileTest.php
@@ -8,10 +8,8 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\Component\Utility\Random;
-use Drupal\file\FileInterface;
 use Drupal\migrate\MigrateExecutable;
 use Drupal\migrate\Tests\MigrateDumpAlterInterface;
-use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\Core\Database\Database;
 use Drupal\simpletest\TestBase;
 
reverted:
--- b/core/scripts/run-tests.sh
+++ a/core/scripts/run-tests.sh
@@ -1,4 +1,3 @@
-#!/usr/bin/env php
 <?php
 
 /**