these 2 derivations will be built:
  /nix/store/ha5mjrk0lpnp9fgvp8v5c7sw4ylwv6cf-claudebox.drv
  /nix/store/39aslxbnw8zajw2qfaaw3vmrgk50p8pq-check-claudebox.drv
building '/nix/store/ha5mjrk0lpnp9fgvp8v5c7sw4ylwv6cf-claudebox.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/ha5mjrk0lpnp9fgvp8v5c7sw4ylwv6cf-claudebox.drv' on farm.numtide.com:50051
claudebox> mac02: building ha5mjrk0lpnp9fgvp8v5c7sw4ylwv6cf-claudebox.drv
building '/nix/store/39aslxbnw8zajw2qfaaw3vmrgk50p8pq-check-claudebox.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/39aslxbnw8zajw2qfaaw3vmrgk50p8pq-check-claudebox.drv' on farm.numtide.com:50051
check-claudebox> mac02: building 39aslxbnw8zajw2qfaaw3vmrgk50p8pq-check-claudebox.drv