these 5 derivations will be built:
  /nix/store/8qfd3v8q91hllry4qhlk9ypjmc9y61w4-Cargo.toml.drv
  /nix/store/91hcx7n8vqgm596yxal87id8ww6mmyzy-Cargo.toml.drv
  /nix/store/p09xz6r3aqijsrzp611gbqfa81ickmkb-source.drv
  /nix/store/jywbigksbzfd6nnmdg3wpp78aqibhh7r-harmonia-deps-3.2.0.drv
  /nix/store/8d6zj70sk213rbnd15l394c15hqfnbb6-harmonia-3.2.0.drv
building '/nix/store/91hcx7n8vqgm596yxal87id8ww6mmyzy-Cargo.toml.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/91hcx7n8vqgm596yxal87id8ww6mmyzy-Cargo.toml.drv'