these 3 derivations will be built:
  /nix/store/50wqi00kdzch8g7ixhf1fprjj81jj18q-omp-18.4.5-cargo-vendor-vendor.drv
  /nix/store/fanvxfsgcd6048shgkd6g65lbn2vhm0q-omp-18.4.5.drv
  /nix/store/dqsclk4qj4ddixlc85icdzldp9ip843v-check-omp.drv