these 2 derivations will be built:
  /nix/store/0w6xxdr208j23cx4pymp9xz6jgmjalpi-dockfmt-wrapper.drv
  /nix/store/1y2m03xhv1akw53nbqf2irp6i6v79rk8-spec-dockfmt.drv
building '/nix/store/1y2m03xhv1akw53nbqf2irp6i6v79rk8-spec-dockfmt.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/1y2m03xhv1akw53nbqf2irp6i6v79rk8-spec-dockfmt.drv' on farm.numtide.com:50051
spec-dockfmt> mac02: building 1y2m03xhv1akw53nbqf2irp6i6v79rk8-spec-dockfmt.drv

upload niks3: ok