Adam G-H · Adam G-H
--- a/src/CronUpdater.php
+++ b/src/CronUpdater.php
    // @todo Use the queue to add update jobs allowing jobs to span multiple
    //   cron runs.
    $recommended_version = $recommended_release->getVersion();
+    $is_applied = FALSE;
    try {
      $this->begin([
        'drupal' => $recommended_version,
      ]);
      $this->stage();
      $this->apply();
+      $is_applied = TRUE;
      $this->destroy();
    }
    catch (StageValidationException $e) {
      $this->logger->error(static::formatValidationException($e));
--- a/src/CronUpdater.php
+++ b/src/CronUpdater.php
      $this->logger->error($e->getMessage());
      return;
    }
-
+    finally {
+      // Destroy the stage if it still remains, unless the error happened during
+      // destroy() in which case it is not possible to destroy the stage.