these 6 derivations will be built:
  /nix/store/m5xbzr1568nqwvqlkn93qk0dh8akj2xd-cargo-package-quote-1.0.47.drv
  /nix/store/rcqy8qdiysizq8bgrr1a1ql6kka9dvzm-vendor-registry.drv
  /nix/store/bfy6zlc1zhnp75bl2jbi79qhqwwf4gmy-vendor-cargo-deps.drv
  /nix/store/qnlhbiniv37l2pjpfdppvjp6s2vpqn58-source.drv
  /nix/store/x4msy4sqg6r6vfvlkfidqd7wgnf95vnz-harmonia-deps-3.1.0.drv
  /nix/store/kgzlk4w2qzbdjr9c2fw9dzp8wkdi79a2-harmonia-llvm-cov-3.1.0.drv