these 6 derivations will be built:
  /nix/store/1ab0y2d64kmll7adrpv0vfyvvpfiqd9z-Cargo.toml.drv
  /nix/store/dq0mki72f25010g6lpnbn4n28xw4ddrr-Cargo.toml.drv
  /nix/store/k4r9iv2k5ygjm7mgvhm8wyc55cnlrav3-Cargo.toml.drv
  /nix/store/k7l6665jybsdag0ck6baq61ml7kwz79h-source.drv
  /nix/store/zrjpxpqfay4m0ywwmy3gd1115xc92apl-harmonia-deps-3.2.0.drv
  /nix/store/j0ip0f1nbk8x530z85ld57r9gqqlf05h-harmonia-3.2.0.drv
building '/nix/store/k4r9iv2k5ygjm7mgvhm8wyc55cnlrav3-Cargo.toml.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/k4r9iv2k5ygjm7mgvhm8wyc55cnlrav3-Cargo.toml.drv'