Issue #3364958: Stages should be destroyed in the background, during cron runs

package_manager/src/StageBase.php

@@ -541,9 +541,16 @@ abstract class StageBase implements LoggerAwareInterface {
     // If the stage root directory exists, delete it and everything in it.
     if (file_exists($staging_root)) {
       try {
-        $this->fileSystem->deleteRecursive($staging_root, function (string $path): void {
-          $this->fileSystem->chmod($path, 0777);
-        });
+        // Instead of deleting it here we are just going to rename it.
+        $dirs = explode('/', $staging_root);
+        $delete_dir = end($dirs);
+        $delete_dir = 'DELETE_' . $delete_dir;
+        array_pop($dirs);
+        array_push($dirs, $delete_dir);
+        rename($staging_root, implode('/', $dirs));
+//        $this->fileSystem->deleteRecursive($staging_root, function (string $path): void {
+//          $this->fileSystem->chmod($path, 0777);
+//        });
       }
       catch (FileException) {
         // Deliberately swallow the exception so that the stage will be marked