--- a/net/adns.lua	Tue Jul 30 02:29:36 2019 +0200
+++ b/net/adns.lua	Tue Jul 30 02:35:17 2019 +0200
@@ -73,11 +73,11 @@
 					handler(peek);
 					return;
 				end
-				log("debug", "Records for %s not in cache, sending query (%s)...", qname, tostring(coroutine.running()));
+				log("debug", "Records for %s not in cache, sending query (%s)...", qname, coroutine.running());
 				local ok, err = resolver:query(qname, qtype, qclass);
 				if ok then
 					coroutine.yield(setmetatable({ resolver, qclass or "IN", qtype or "A", qname, coroutine.running()}, query_mt)); -- Wait for reply
-					log("debug", "Reply for %s (%s)", qname, tostring(coroutine.running()));
+					log("debug", "Reply for %s (%s)", qname, coroutine.running());
 				end
 				if ok then
 					ok, err = pcall(handler, resolver:peek(qname, qtype, qclass));
@@ -86,13 +86,13 @@
 					ok, err = pcall(handler, nil, err);
 				end
 				if not ok then
-					log("error", "Error in DNS response handler: %s", tostring(err));
+					log("error", "Error in DNS response handler: %s", err);
 				end
 			end)(resolver:peek(qname, qtype, qclass));
 end
 
 function query_methods:cancel(call_handler, reason) -- luacheck: ignore 212/reason
-	log("warn", "Cancelling DNS lookup for %s", tostring(self[4]));
+	log("warn", "Cancelling DNS lookup for %s", self[4]);
 	self[1].cancel(self[2], self[3], self[4], self[5], call_handler);
 end