this derivation will be built:
  /nix/store/8b0w5rwdv3xm3nkjg79s2wdqj33bbxp2-check-herdr-core.drv
building '/nix/store/8b0w5rwdv3xm3nkjg79s2wdqj33bbxp2-check-herdr-core.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&restart-grace=900&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/8b0w5rwdv3xm3nkjg79s2wdqj33bbxp2-check-herdr-core.drv' on farm.numtide.com:50051
check-herdr-core> mac02: building 8b0w5rwdv3xm3nkjg79s2wdqj33bbxp2-check-herdr-core.drv