--- a/net/http.lua	Mon Dec 19 09:32:43 2016 +0100
+++ b/net/http.lua	Fri Dec 30 18:25:23 2016 +0100
@@ -17,9 +17,9 @@
 
 local t_insert, t_concat = table.insert, table.concat;
 local pairs = pairs;
-local tonumber, tostring, xpcall, select, traceback =
-      tonumber, tostring, xpcall, select, debug.traceback;
-local assert, error = assert, error
+local tonumber, tostring, xpcall, traceback =
+      tonumber, tostring, xpcall, debug.traceback;
+local error = error
 
 local log = require "util.logger".init("http");