these 5 derivations will be built:
  /nix/store/vkr5zvnr7hvww8jpjvyia3ljnz8wq983-source.drv
  /nix/store/8c9svc0ql1ifqfb0v65g2b8clk0ai8k3-omp-18.18.9-cargo-vendor-vendor-staging.drv
  /nix/store/3msdcarrgd7dfv59n66j53j7fkfh36fl-omp-18.18.9-cargo-vendor-vendor.drv
  /nix/store/wqqa3lvjs20blyfdl5x1w1fg7qnb49rn-omp-18.18.9.drv
  /nix/store/ss5bq84w3dfj0spi3xy4iihxw0rd7jkm-check-omp.drv