these 5 derivations will be built:
  /nix/store/2nv6j2cqbsqqi15jh5h8xhf37dj23fbr-vendor-registry.drv
  /nix/store/11qxi8jxlkmh9rah25magwvy4v1nsqxj-vendor-cargo-deps.drv
  /nix/store/lzimnjsjlrpw259p1z8yd3v9g89y7ma3-source.drv
  /nix/store/xm20762gid07lan9jb1zfphy26xn2r93-harmonia-deps-3.2.0.drv
  /nix/store/17cwn3ypkf50p5izdnqfy0agsrb8jixv-harmonia-llvm-cov-3.2.0.drv