{"ast_node_type":"variable","tokens":[{"end":58,"kind":"keyword","start":0,"text":"let"}]}
                let mut rpath = OsString::from("@rpath/");
            if self.sess.opts.cg.rpath || self.sess.opts.unstable_opts.osx_rpath_install_name {
                rpath.push(out_filename.file_name().unwrap());