diff -u b/core/lib/Drupal/Component/Archiver/ArchiveTar.php b/core/lib/Drupal/Component/Archiver/ArchiveTar.php
--- b/core/lib/Drupal/Component/Archiver/ArchiveTar.php
+++ b/core/lib/Drupal/Component/Archiver/ArchiveTar.php
@@ -182,6 +182,7 @@
 
     // {{{ destructor
 //    function _Archive_Tar()
+    function __destruct()
     {
         $this->_close();
         // ----- Look for a local copy to delete