these 5 derivations will be built:
  /nix/store/2pxg5qqpm471pczfwnqmvr0105yibql9-source.drv
  /nix/store/m289zzbhv5swwlxgbigp7jw09ms87iap-omp-18.2.10-cargo-vendor-vendor-staging.drv
  /nix/store/7083wb3iczavqxxh90m7qhlskz3wxcvq-omp-18.2.10-cargo-vendor-vendor.drv
  /nix/store/qhmvh9i1k35pbi0cs4qw74y7adxd3ds0-omp-18.2.10.drv
  /nix/store/9gzadyp3x6kir8zxcl0qzjg0dyqqa6b0-check-omp.drv