this derivation will be built:
  /nix/store/xfhi1kq5fi8s92rslvc4k94h1af7kfhn-test-examples.drv
building '/nix/store/xfhi1kq5fi8s92rslvc4k94h1af7kfhn-test-examples.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/xfhi1kq5fi8s92rslvc4k94h1af7kfhn-test-examples.drv' on farm.numtide.com:50051
test-examples> mac02: building xfhi1kq5fi8s92rslvc4k94h1af7kfhn-test-examples.drv