these 3 derivations will be built:
  /nix/store/z96am52nvpmblxwfry139wijpf805llv-rendered.drv
  /nix/store/471gz4h7xh37bygbnxybgqp43r59kqyz-generated-docs.drv
  /nix/store/fa156xkq7kvi2wr0qdckipppw0qp0n78-nix-shell.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy