dup shifted arguments to ensure they are not frozen
dup shifted arguments to ensure they are not frozen

closes #389

vcgato29/heroku,Faisalawanisee/heroku,heroku/heroku,macedo/heroku,heroku/heroku,greeca0204/heroku,uhoh-itsmaciek/heroku,duypq94/heroku,sancopanco/heroku,gregburek/heroku,vcgato29/heroku,dickeyxxx/heroku,rkh/heroku,uhoh-itsmaciek/heroku,duypq94/heroku,macedo/heroku,dickeyxxx/heroku,macedo/heroku,gregburek/heroku,dickeyxxx/heroku,greeca0204/heroku,heroku/heroku,Faisalawanisee/heroku,rkh/heroku,sancopanco/heroku,sancopanco/heroku,rkh/heroku,gregburek/heroku,vcgato29/heroku,duypq94/heroku,Faisalawanisee/heroku,greeca0204/heroku