Issue #3099325 by heddn, Chi: Always return exit code in Symfony console commands

src/Command/CacheRebuild.php

@@ -27,6 +27,7 @@ class CacheRebuild extends BaseCommand {
     parent::execute($input, $output);
     drupal_flush_all_caches();
     $output->writeln('Cache rebuild complete.');
+    return 0;
   }
 
 }

src/Command/DatabaseUpdate.php

@@ -35,6 +35,7 @@ class DatabaseUpdate extends BaseCommand {
     else {
       $output->writeln('No database updates required.');
     }
+    return 0;
   }
 
   /**

src/Command/DatabaseUpdateStatus.php

@@ -16,7 +16,7 @@ class DatabaseUpdateStatus extends BaseCommand {
   protected function configure() {
     parent::configure();
     $this->setName('updatedb-status')
-      ->setDescription('Apply any database updates required (as with running update.php).')
+      ->setDescription('List any pending database updates.')
       ->setAliases(['updbst', 'updatedb:status']);
   }
 
@@ -28,6 +28,7 @@ class DatabaseUpdateStatus extends BaseCommand {
     $pending_updates = \Drupal::service('automatic_updates.pending_db_updates')
       ->run();
     $output->writeln($pending_updates);
+    return 0;
   }
 
 }