these 5 derivations will be built:
  /nix/store/784zpvijwrzsvq5cc0r6vhlsafglafwl-source.drv
  /nix/store/kbidmvgrk8dfb53bx9pwz8gjzdm7xch5-omp-18.11.0-cargo-vendor-vendor-staging.drv
  /nix/store/3rhip4xv4ilhb3zgm6fs6x18g4ak4dlf-omp-18.11.0-cargo-vendor-vendor.drv
  /nix/store/5g7h8zhr3h6da9b95rns6ddrzxnf7cc1-omp-18.11.0.drv
  /nix/store/gph0v2ynhcpvyf93zbdp6hb76z75jfb2-check-omp.drv