these 2 derivations will be built:
  /nix/store/f900ksm7sfzgisqvfybggqyzih663f7f-pi-1.5.1.drv
  /nix/store/c5b9zqk01q91m8sk397km21nzhd18ymb-check-pi.drv
building '/nix/store/c5b9zqk01q91m8sk397km21nzhd18ymb-check-pi.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=23&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/c5b9zqk01q91m8sk397km21nzhd18ymb-check-pi.drv' on farm.numtide.com:50051
check-pi> elastic-arm-feda0c46: building c5b9zqk01q91m8sk397km21nzhd18ymb-check-pi.drv