these 5 derivations will be built:
  /nix/store/rpvyxsnl4z32n6fiynrmns41z1lyx265-source.drv
  /nix/store/jbmd64kmm9357479kpn57h8yc8p03mzk-omp-18.4.12-cargo-vendor-vendor-staging.drv
  /nix/store/vv33wdgg62sqbyf6qac4sbd166xk69yn-omp-18.4.12-cargo-vendor-vendor.drv
  /nix/store/0h7gsfs7dl6zckigfr4hf7h606fcqbby-omp-18.4.12.drv
  /nix/store/pnrhl2j9rzmrglw4xy3mrnwvrasdas5f-check-omp.drv