these 2 derivations will be built:
  /nix/store/s34wsycb489w1apqmki3jkhr0ynv1gi2-flake-inputs.drv
  /nix/store/mp1hds50d38hy79izgk6ccg08lwynmvi-check-flake-inputs.drv
building '/nix/store/s34wsycb489w1apqmki3jkhr0ynv1gi2-flake-inputs.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=21&system=aarch64-darwin'
building '/nix/store/s34wsycb489w1apqmki3jkhr0ynv1gi2-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> mac02: building s34wsycb489w1apqmki3jkhr0ynv1gi2-flake-inputs.drv
building '/nix/store/mp1hds50d38hy79izgk6ccg08lwynmvi-check-flake-inputs.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=21&system=aarch64-darwin'
building '/nix/store/mp1hds50d38hy79izgk6ccg08lwynmvi-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> mac02: building mp1hds50d38hy79izgk6ccg08lwynmvi-check-flake-inputs.drv