this derivation will be built:
  /nix/store/qhy8bcnx3g80y64dyhbv7y9rsb5fhj42-check-ctx.drv
building '/nix/store/qhy8bcnx3g80y64dyhbv7y9rsb5fhj42-check-ctx.drv' on 'ssh-ng://customer@mac02.m.ntd.one'
building '/nix/store/qhy8bcnx3g80y64dyhbv7y9rsb5fhj42-check-ctx.drv'

upload niks3: ok