Index: src/wp-includes/class-feed.php
===================================================================
--- src/wp-includes/class-feed.php	(revision 32596)
+++ src/wp-includes/class-feed.php	(working copy)
@@ -10,7 +10,7 @@
 	 * @static
 	 * @access public
 	 */
-	public function create($location, $filename, $extension) {
+	public static function get_handler($location, $filename, $extension) {
 		return new WP_Feed_Cache_Transient($location, $filename, $extension);
 	}
 }
Index: src/wp-includes/class-simplepie.php
===================================================================
--- src/wp-includes/class-simplepie.php	(revision 32596)
+++ src/wp-includes/class-simplepie.php	(working copy)
@@ -967,9 +967,9 @@
 	/**
 	 * Set which class SimplePie uses for caching
 	 */
-	public function set_cache_class($class = 'SimplePie_Cache')
+	public function set_cache_class( $class = 'SimplePie_Cache', $legacy = true )
 	{
-		return $this->registry->register('Cache', $class, true);
+		return $this->registry->register( 'Cache', $class, $legacy );
 	}
 
 	/**
Index: src/wp-includes/feed.php
===================================================================
--- src/wp-includes/feed.php	(revision 32596)
+++ src/wp-includes/feed.php	(working copy)
@@ -626,7 +626,7 @@
 	// constructor sets it before we have a chance to set the sanitization class
 	$feed->sanitize = new WP_SimplePie_Sanitize_KSES();
 
-	$feed->set_cache_class( 'WP_Feed_Cache' );
+	$feed->set_cache_class( 'WP_Feed_Cache', false );
 	$feed->set_file_class( 'WP_SimplePie_File' );
 
 	$feed->set_feed_url( $url );