these 7 derivations will be built:
  /nix/store/j466x4mjc5fjnnl41mxryirgdswkipr6-cargo-src-futures-core-0.3.34.drv
  /nix/store/5s60d634d0ysm67zqp0mxssmkn970pam-cargo-package-futures-core-0.3.34.drv
  /nix/store/5cjqx3pvgmkpp6db33sdhgz95gypyb86-vendor-registry.drv
  /nix/store/i4a0sjcdv1g2blpkbn9nr1h7crfql0xg-source.drv
  /nix/store/mw071mgzjr5yh8cg308wi97r5n2r16ac-vendor-cargo-deps.drv
  /nix/store/al1q8pv5il3xfyjrv3m8q2f370hy04n1-harmonia-deps-3.2.0.drv
  /nix/store/s9aypaidcxmrhql0ymsl40q3ihx1npsv-harmonia-3.2.0.drv