these 2 derivations will be built:
  /nix/store/8gx4rcvc7gz1a4yxg8licf6bjp1pl7d3-flake-inputs.drv
  /nix/store/mgcnnj2ws0cf6fhf28xk4nixzpl0af29-check-flake-inputs.drv
building '/nix/store/8gx4rcvc7gz1a4yxg8licf6bjp1pl7d3-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/8gx4rcvc7gz1a4yxg8licf6bjp1pl7d3-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> elastic-arm-9a50e053: building 8gx4rcvc7gz1a4yxg8licf6bjp1pl7d3-flake-inputs.drv
building '/nix/store/mgcnnj2ws0cf6fhf28xk4nixzpl0af29-check-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/mgcnnj2ws0cf6fhf28xk4nixzpl0af29-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> elastic-arm-9a50e053: building mgcnnj2ws0cf6fhf28xk4nixzpl0af29-check-flake-inputs.drv