this derivation will be built:
  /nix/store/4652f6nkmjn0xqka2af65bqjiqdj9a3q-check-codex.drv
building '/nix/store/4652f6nkmjn0xqka2af65bqjiqdj9a3q-check-codex.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=20&system=aarch64-darwin'
building '/nix/store/4652f6nkmjn0xqka2af65bqjiqdj9a3q-check-codex.drv' on farm.numtide.com:50051
check-codex> mac02: building 4652f6nkmjn0xqka2af65bqjiqdj9a3q-check-codex.drv