Issue #1630576 by nexusnovaz, jhodgdon, catch: Cron reports it's done long before it really is done

(cherry picked from commit 6bbf792f)

core/lib/Drupal/Core/Cron.php

@@ -104,6 +104,9 @@ public function run() {
       // Release cron lock.
       $this->lock->release('cron');
 
+      // Add watchdog message.
+      $this->logger->info('Cron run completed.');
+
       // Return TRUE so other functions can check if it did run successfully
       $return = TRUE;
     }
@@ -121,7 +124,6 @@ protected function setCronLastTime() {
     // Record cron time.
     $request_time = $this->time->getRequestTime();
     $this->state->set('system.cron_last', $request_time);
-    $this->logger->info('Cron run completed.');
   }
 
   /**