these 6 derivations will be built:
  /nix/store/pf70dii71h4l3r3fyjqsfz1iczxffdcf-cargo-package-bytes-1.12.1.drv
  /nix/store/br4pgbbraxw2zbryggq25g1dbk9a68k7-vendor-registry.drv
  /nix/store/ll9cwysr0brzd7v5y6wayv27h1xgbf7b-source.drv
  /nix/store/wih7kq2acdwajn5xpxmh9pjmqnix41vm-vendor-cargo-deps.drv
  /nix/store/w200dcrc5b0v5c9y74mjfaipy1w2g7pw-harmonia-deps-3.1.0.drv
  /nix/store/c96jpinmri47ax1bjji1i61y035b9bbv-harmonia-llvm-cov-3.1.0.drv