It looks like the option gtk + 86_64 doesn't work with release and debug. Instead of downloading gtk I get a readme file that points me to a non existing url.. example of flags: python bisect-builds -a x86_64 -c debug -p gtk Anyway I would really like to run this script on linux (I need it for jsc in particular).
GTK keeps their builds local to their engineering to avoid external internet bandwidth usage. They do not store them on a publicly accessible store (AWS S3) like the other archives. We should probably just disable bisecting builds against GTK...