these 3 derivations will be built:
  /nix/store/a81845zbyi1lxymvxhqdn3i6y87azzr9-rendered.drv
  /nix/store/rvj4z2jbkp2g8n0k5icsg9p1fm9s9571-generated-docs.drv
  /nix/store/1lcrc4j3cjnpyn6741pdgwfbqwjq2b16-nix-shell.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy