--- a/util/human/io.lua	Tue Jun 02 08:01:21 2020 +0100
+++ b/util/human/io.lua	Tue Jun 02 08:02:03 2020 +0100
@@ -82,7 +82,7 @@
 end
 
 local function printf(fmt, ...)
-	print(msg:format(...));
+	print(fmt:format(...));
 end
 
 return {