these 5 derivations will be built:
  /nix/store/032hmhvi6aqi7ifdnpxgcgws6qfgc2gg-vendor-registry.drv
  /nix/store/lqjm2dlnc2a8bj5aa43453m8y4yi8awf-vendor-cargo-deps.drv
  /nix/store/nzmfkk8zr3p2xc10vs6m5mj4sl2fyii3-source.drv
  /nix/store/axyqwx58pnv6hba3g3czrmf3rkv06pw0-harmonia-deps-3.3.0.drv
  /nix/store/hkrv588ibylp7fnn7m0wncmjqnfizsfc-harmonia-llvm-cov-3.3.0.drv