these 2 derivations will be built:
  /nix/store/z3na6bg5mm1702b5gcwpv3y31041l39p-collie-1.19.2.drv
  /nix/store/dmc609j9jj0wbpknyvrrlq4kf6s2qk2g-check-collie.drv
scheduler at farm.numtide.com:50051: no healthy upstream, reconnecting
warning: dmc609j9jj0wbpknyvrrlq4kf6s2qk2g-check-collie.drv: no connected, non-draining worker for system 'aarch64-darwin' offers features {}, the workers offer {}, waiting up to 120s for a worker