--- a/util/sasl/digest-md5.lua	Wed Feb 28 18:12:20 2018 +0100
+++ b/util/sasl/digest-md5.lua	Wed Feb 28 20:06:26 2018 +0100
@@ -26,6 +26,7 @@
 local nodeprep = require "util.encodings".stringprep.nodeprep;
 
 local _ENV = nil;
+-- luacheck: std none
 
 --=========================
 --SASL DIGEST-MD5 according to RFC 2831