nixbot

failed to register gcroot /var/lib/nixbot/eval-gcroots/650/inputs/s4kqfr097p9kj4lygjz57qnpj814p107-source -> /nix/store/s4kqfr097p9kj4lygjz57qnpj814p107-source: warning: unknown setting 'eval-cores'
warning: unknown setting 'lazy-trees'
don't know how to build these paths:
  /nix/store/s4kqfr097p9kj4lygjz57qnpj814p107-source
error: path '/nix/store/s4kqfr097p9kj4lygjz57qnpj814p107-source' is required, but there is no substituter that can build it