these 2 derivations will be built:
  /nix/store/3g0yj2m0cc448il3x1farn8j7s7qk16s-flake-inputs.drv
  /nix/store/9hmrs1lcl9a7ddlghf8s14p2dmraxvrh-check-flake-inputs.drv
building '/nix/store/3g0yj2m0cc448il3x1farn8j7s7qk16s-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=22&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/3g0yj2m0cc448il3x1farn8j7s7qk16s-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> elastic-arm-ac8bb7f5: building 3g0yj2m0cc448il3x1farn8j7s7qk16s-flake-inputs.drv
building '/nix/store/9hmrs1lcl9a7ddlghf8s14p2dmraxvrh-check-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/9hmrs1lcl9a7ddlghf8s14p2dmraxvrh-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> elastic-arm-ac8bb7f5: building 9hmrs1lcl9a7ddlghf8s14p2dmraxvrh-check-flake-inputs.drv