this derivation will be built:
  /nix/store/h4yrb44c5b32c5y5g0wlf1i68zz4cr0y-treefmt-check.drv
error: gRPC QueryValidPaths on 'farm.numtide.com:50051' failed: error: substituter 'https://cache.numtide.com' is disabled
error: Cannot build '/nix/store/h4yrb44c5b32c5y5g0wlf1i68zz4cr0y-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/2gh2lq3yrhw7s95znydjgh864qr6xcdc-treefmt-check