symfony
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/CacheWarmer/ConfigBuilderCacheWarmer.php
Lines changed: 7 additions & 2 deletions b/‎src/Symfony/Bundle/FrameworkBundle/CacheWarmer/ConfigBuilderCacheWarmer.php
Lines changed: 7 additions & 2 deletions
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/Resources/config/services.php
Lines changed: 1 addition & 2 deletions b/‎src/Symfony/Bundle/FrameworkBundle/Resources/config/services.php
Lines changed: 1 addition & 2 deletions
@@ -12,6 +12,7 @@
 namespace Symfony\Bundle\FrameworkBundle\CacheWarmer;
 
 use Psr\Container\ContainerInterface;
+use Psr\Log\LoggerInterface;
 use Symfony\Bundle\FrameworkBundle\Command\BuildDebugContainerTrait;
 use Symfony\Component\Config\Builder\ConfigBuilderGenerator;
 use Symfony\Component\Config\Builder\ConfigBuilderGeneratorInterface;
@@ -32,10 +33,12 @@ class ConfigBuilderCacheWarmer implements CacheWarmerInterface
     use BuildDebugContainerTrait;
 
     private $kernel;
+    private $logger;
 
-    public function __construct(KernelInterface $kernel)
+    public function __construct(KernelInterface $kernel, LoggerInterface $logger = null)
     {
         $this->kernel = $kernel;
+        $this->logger = $logger;
     }
 
     /**
@@ -58,7 +61,9 @@ public function warmUp(string $cacheDir)
             try {
                 $this->dumpExtension($extension, $generator);
             } catch (\Throwable $e) {
-                throw new \RuntimeException(sprintf('Failed to generate ConfigBuilder for extension "%s".', \get_class($extension)), 0, $e);
+                if ($this->logger) {
+                    $this->logger->warning('Failed to generate ConfigBuilder for extension {extensionClass).', ['exception'=>$e, 'extensionClass'=>\get_class($extension)]);
+                }
             }
         }
 
 
@@ -17,7 +17,6 @@
 use Symfony\Component\Config\ResourceCheckerConfigCacheFactory;
 use Symfony\Component\Console\ConsoleEvents;
 use Symfony\Component\DependencyInjection\Config\ContainerParametersResourceChecker;
-use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\DependencyInjection\EnvVarProcessor;
 use Symfony\Component\DependencyInjection\ParameterBag\ContainerBag;
 use Symfony\Component\DependencyInjection\ParameterBag\ContainerBagInterface;
@@ -211,7 +210,7 @@ class_exists(WorkflowEvents::class) ? WorkflowEvents::ALIASES : []
                 service('container.getenv'),
             ])
         ->set('config_builder.warmer', ConfigBuilderCacheWarmer::class)
-            ->args([service(KernelInterface::class)])
+            ->args([service(KernelInterface::class), service('logger')->nullOnInvalid(),])
             ->tag('kernel.cache_warmer')
     ;
 };