these 4 derivations will be built:
  /nix/store/f341w35mw46hpf4ivbk9mbsbhxgpqvy8-omp-18.20.0-cargo-vendor-vendor-staging.drv
  /nix/store/438iq3lks7ssjg0s4c11gq74j6fwpiip-omp-18.20.0-cargo-vendor-vendor.drv
  /nix/store/hwwcyzxc9y39bvbhm2s1a7v6iigkf5zx-omp-18.20.0.drv
  /nix/store/wcmwsys7w0x4hwhnalj9h4yv1py0p97a-check-omp.drv