Recently we switched the PostgreSQL Buildfarm to use
https for its front-facing web transactions. That’s worked pretty well, but one thing got broken in the change. The registration page uses a Captcha to help avoid web spam, which has been a problem in the past. However, the code to fetch the relevant html was still getting plain
http, and thus browsers were refusing to display the Captcha because it came from an untrusted source. Without the Captcha the registration was rejected. This was discovered yesterday, and has now been fixed. The Captcha code now uses
https. If you have recently found a buildfarm registration rejected like this, please resubmit it.