warning: unable to download 'http://build04.ofborg.org/nix-cache-info': Could not connect to server (7) Failed to connect to build04.ofborg.org port 80 after 1732 ms: Could not connect to server
this derivation will be built:
  /nix/store/b40drs8i4mxpakb4azhn621vkfd182q6-stayrtr-0.6.4-test-version.drv
this path will be fetched (8.29 MiB download, 29.03 MiB unpacked):
  /nix/store/w48mpn835c3i8fikfavx5hmpbcnfifbr-stayrtr-0.6.4
copying path '/nix/store/w48mpn835c3i8fikfavx5hmpbcnfifbr-stayrtr-0.6.4' from 'https://cache.nixos.org'...
building '/nix/store/b40drs8i4mxpakb4azhn621vkfd182q6-stayrtr-0.6.4-test-version.drv'...
StayRTR 0.6.4
/nix/store/w48mpn835c3i8fikfavx5hmpbcnfifbr-stayrtr-0.6.4
/nix/store/xak3vrj5kmcax3nq4j1vf1pxig7hvngf-stayrtr-0.6.4-test-version