these 2 derivations will be built:
  /nix/store/g8gvc5555l7j43pbgl79vsrpybkdc4mm-generate-dependency-diagram.drv
  /nix/store/j1bl7awnc02cy1yzmhm98ihlhbkp125q-check-dependency-diagram.drv
building '/nix/store/g8gvc5555l7j43pbgl79vsrpybkdc4mm-generate-dependency-diagram.drv' on 'ssh-ng://customer@mac02'