Hi, It seems that build logs are either not being saved at all, or are disappearing very quickly indeed (within hours). See any recent gnu build, eg
https://hydra.nixos.org/build/50778425 Normally there is a "log" link. The "log diff" button is still present, but leads to a 404. This makes it quite hard to diagnose a failed build. :) Thanks in advance for any help with this.
