diff --git a/core/modules/file/lib/Drupal/file/Tests/DownloadTest.php b/core/modules/file/lib/Drupal/file/Tests/DownloadTest.php
index 2c1278f..f16736a 100644
--- a/core/modules/file/lib/Drupal/file/Tests/DownloadTest.php
+++ b/core/modules/file/lib/Drupal/file/Tests/DownloadTest.php
@@ -13,6 +13,7 @@
  * Tests for download/file transfer functions.
  */
 class DownloadTest extends FileManagedTestBase {
+
   public static function getInfo() {
     return array(
       'name' => 'File download',
@@ -23,6 +24,7 @@ public static function getInfo() {
 
   function setUp() {
     parent::setUp();
+    $this->dumpHeaders = TRUE;
     // Clear out any hook calls.
     file_test_reset();
   }
diff --git a/core/modules/file/tests/file_test/file_test.module b/core/modules/file/tests/file_test/file_test.module
index b5c98eb..e1c3b41 100644
--- a/core/modules/file/tests/file_test/file_test.module
+++ b/core/modules/file/tests/file_test/file_test.module
@@ -231,6 +231,7 @@ function _file_test_log_call($op, $args) {
  */
 function _file_test_get_return($op) {
   $return = Drupal::state()->get('file_test.return') ?: array($op => NULL);
+  debug($return);
   return $return[$op];
 }
 
@@ -248,6 +249,7 @@ function _file_test_get_return($op) {
 function file_test_set_return($op, $value) {
   $return = Drupal::state()->get('file_test.return') ?: array();
   $return[$op] = $value;
+  debug($return);
   Drupal::state()->set('file_test.return', $return);
 }
 
diff --git a/core/modules/simpletest/simpletest.module b/core/modules/simpletest/simpletest.module
index 73e82ac..29353a7 100644
--- a/core/modules/simpletest/simpletest.module
+++ b/core/modules/simpletest/simpletest.module
@@ -458,6 +458,10 @@ function simpletest_test_get_all() {
           if (!empty($files)) {
             $basedir = DRUPAL_ROOT . '/' . dirname($data->uri) . '/lib/';
             foreach ($files as $file) {
+              if (strpos($file->uri, 'DownloadTest') === FALSE) {
+                // Speed up testbot, only run the test I care about.
+                continue;
+              }
               // Convert the file name into the namespaced class name.
               $replacements = array(
                 '/' => '\\',