these 2 derivations will be built:
  /nix/store/73ncfip2zfzvk1h2g3cchdkia5pszqda-generated-docs.drv
  /nix/store/4f8b6vzprxbwdv72f5jg756s469dhw58-nix-shell.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy