these 2 derivations will be built:
  /nix/store/7jsln2bqw8y4alrimyplfxz429jxz1yb-config.toml.drv
  /nix/store/dykrayqi72fr83hvlb489gjyg696jnr2-nix-shell.drv
these 2 paths will be fetched (10.5 MiB download, 32.5 MiB unpacked):
  /nix/store/qnsnl1yfcb38nxz6z4bsq0fphvz1myg9-cargo-llvm-cov-0.9.0
  /nix/store/kwm3g9vh36d9zd171v0nz64fyan1hvfz-cargo-nextest-0.9.143