these 5 derivations will be built:
  /nix/store/baxcfhhfpjkgai4x04p2y9rcm0isvkd2-source.drv
  /nix/store/4j40bb0fjphmdhiwsvknc8d60plp3d91-omp-18.18.7-cargo-vendor-vendor-staging.drv
  /nix/store/8x9wnyz5cdcvxbgix8my7j8k93lw03d6-omp-18.18.7-cargo-vendor-vendor.drv
  /nix/store/2qnrk0ich2d1a100i7bxz1ncrl35zcca-omp-18.18.7.drv
  /nix/store/1mxz8xkjcbb75vi4s54ylrp1fzh27lc9-check-omp.drv