these 3 derivations will be built:
  /nix/store/3lkm6kidl0iv3584f02hsn6wk316kg72-rendered.drv
  /nix/store/gqlld71kzx4x2g6bcfv9mx1p2i6x4py3-generated-docs.drv
  /nix/store/8w2z9y51rqqyby8kzzlqlkmwv2y3fq4n-nix-shell.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy