nixbot

failed to register gcroot /var/lib/nixbot/eval-gcroots/298/inputs/8ggr67sci43hlp8ba6rhjrdhhj5490am-source -> /nix/store/8ggr67sci43hlp8ba6rhjrdhhj5490am-source: don't know how to build these paths:
  /nix/store/8ggr67sci43hlp8ba6rhjrdhhj5490am-source
error: path '/nix/store/8ggr67sci43hlp8ba6rhjrdhhj5490am-source' is required, but there is no substituter that can build it