these 3 derivations will be built:
  /nix/store/vqndql8x02a35m7ybsakla28hnz0cm25-rendered.drv
  /nix/store/qymy4kbq5gcpmrdg19qvmfydpb0yq3l2-generated-docs.drv
  /nix/store/jfmv2hsb8hl3scq2di01gbix3r1vxa89-nix-shell.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy