these 5 derivations will be built:
  /nix/store/zhk76c3iljz4am1nc22c93823zb72n37-vendor-registry.drv
  /nix/store/4kc553syd6iks8ji2bgm2l8gwdyg4c8z-vendor-cargo-deps.drv
  /nix/store/945aswnjpilsm3a2qwqaxaf9vpdsad6h-source.drv
  /nix/store/wvvl3i2p7c53bsyammwhgjbwnqnymyhw-harmonia-deps-3.2.0.drv
  /nix/store/pn90hylc9672ccp073ryy2r7wxrjyfwd-harmonia-llvm-cov-3.2.0.drv