this derivation will be built:
  /nix/store/la84na6hpz60lk8kbc44d3nb0fh0fdkf-cargo-nix-plugin-git-source-test.drv
building '/nix/store/la84na6hpz60lk8kbc44d3nb0fh0fdkf-cargo-nix-plugin-git-source-test.drv' on 'ssh-ng://nix@jamie'