Index: functions.php
===================================================================
--- functions.php	(revision 1293)
+++ functions.php	(working copy)
@@ -102,6 +102,7 @@
 
 	add_filter( 'breadcrumb_trail_items',  __NAMESPACE__ . '\\breadcrumb_trail_items', 10, 2 );
 
+	add_filter( 'wp_parser_skip_duplicate_hooks', '__return_true' );
 }
 
 /**