these 5 derivations will be built:
  /nix/store/ys1gvn3xqvfymxqjh4v79vz7pgp415bj-source.drv
  /nix/store/xr8yzg5nnkm8g91kgizg5hvqh4fcx0rb-omp-18.6.3-cargo-vendor-vendor-staging.drv
  /nix/store/2v19pawqakp7ybnla6fzy3cl7ry1122v-omp-18.6.3-cargo-vendor-vendor.drv
  /nix/store/1pbkkaz5l0v7rfdj18cxc91z445axvg1-omp-18.6.3.drv
  /nix/store/0ll7agnizqa2d2xgslpl8rkprji5c349-check-omp.drv