Add logging on failures

app/config/config_prod.yml

@@ -22,13 +22,14 @@ monolog:
             type:         fingers_crossed
             action_level: error
             handler:      nested
-            channels: [!event]
+            channels: ['!event']
             excluded_404s:
                 - ^/
         nested:
             type:  stream
             path:  %kernel.logs_dir%/%kernel.environment%.log
             level: debug
+            include_stacktraces: true
 
 snc_redis:
     clients:

src/Packagist/WebBundle/Controller/ApiController.php

@@ -280,6 +280,8 @@ class ApiController extends Controller
                 $this->get('packagist.package_manager')->notifyUpdateFailure($package, $e, $io->getOutput());
             }
 
+            $this->get('logger')->error('Failed update of '.$package->getName(), ['exception' => $e]);
+
             return new Response(json_encode(array(
                 'status' => 'error',
                 'message' => '['.get_class($e).'] '.$e->getMessage(),