this derivation will be built:
  /nix/store/70kz3vm00zf9wbn73m3jnx3rgjkniy4s-test-examples.drv
building '/nix/store/70kz3vm00zf9wbn73m3jnx3rgjkniy4s-test-examples.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/70kz3vm00zf9wbn73m3jnx3rgjkniy4s-test-examples.drv' on farm.numtide.com:50051
test-examples> elastic-arm-bdb1245a: building 70kz3vm00zf9wbn73m3jnx3rgjkniy4s-test-examples.drv