these 3 derivations will be built:
  /nix/store/q3p87s7r2xg9fddnlmy83ylm6m94cb8f-cargo-nix-prefetch-0.1.0.drv
  /nix/store/6lhvq4x991m29vdzv5yygwz4asv7r21g-sample-project-cargo-home.drv
  /nix/store/wrrx4xxlqbapsg5zjwlnnm99qx3ms6sr-cargo-nix-plugin-offline-build-test.drv
building '/nix/store/q3p87s7r2xg9fddnlmy83ylm6m94cb8f-cargo-nix-prefetch-0.1.0.drv' on 'ssh-ng://nix@jamie'