diff --git a/core/lib/Drupal/Core/Template/TwigCacheChain.php b/core/lib/Drupal/Core/Template/TwigCacheChain.php
index 956cb6d..f529f67 100644
--- a/core/lib/Drupal/Core/Template/TwigCacheChain.php
+++ b/core/lib/Drupal/Core/Template/TwigCacheChain.php
@@ -13,7 +13,7 @@
 class TwigCacheChain implements \Twig_CacheInterface {
 
   /**
-   * The cache classes to chain.
+   * The ordered cache classes to chain.
    *
    * @var \Twig_CacheInterface[]
    */
@@ -56,14 +56,10 @@ public function has($key) {
    */
   public function load($key) {
     foreach ($this->caches as $cache) {
-      try {
-        if ($cache->has($key)) {
-          $cache->load($key);
-        }
-        return;
-      }
-      catch (\RuntimeException $e) {
+      if ($cache->has($key)) {
+        $cache->load($key);
       }
+      return;
     }
   }
 
@@ -73,11 +69,7 @@ public function load($key) {
   public function write($key, $content) {
     // We want to write to all of them.
     foreach ($this->caches as $cache) {
-      try {
-        $cache->write($key, $content);
-      }
-      catch (\RuntimeException $e) {
-      }
+      $cache->write($key, $content);
     }
   }
 
diff --git a/core/lib/Drupal/Core/Template/TwigPhpStorageCache.php b/core/lib/Drupal/Core/Template/TwigPhpStorageCache.php
index ce98a26..44bbd27 100644
--- a/core/lib/Drupal/Core/Template/TwigPhpStorageCache.php
+++ b/core/lib/Drupal/Core/Template/TwigPhpStorageCache.php
@@ -67,7 +67,7 @@ protected function storage() {
   public function generateKey($name, $className) {
     // We override the cache filename in order to avoid issues with not using
     // shared filesystems. The Twig templates for example rely on available Twig
-    // extensions, so we use the twig extension hash which varies by extensions
+    // extensions, so we use the Twig extension hash which varies by extensions
     // and their mtime.
     // @see \Drupal\Core\DependencyInjection\Compiler\TwigExtensionPass
     $hash = hash('sha256', $className);
@@ -99,7 +99,7 @@ public function write($key, $content) {
     if (!$this->storage()->save($key, $content)) {
       throw new \RuntimeException(sprintf('Failed to write Twig cache file "%s".', $key));
     }
-    // Save the last modification time.
+    // Save the last mtime.
     $cid = 'twig:' . $key;
     $this->cache->set($cid, REQUEST_TIME);
   }