these 3 derivations will be built:
  /nix/store/6kk5mlg20cy65p6vsw26l9kwbwxwbvwf-rendered.drv
  /nix/store/v9nkkhy0ww6xm1ypln5kif886zahb0d4-generated-docs.drv
  /nix/store/dl09fq5w3h0mpqcn5a1v3x6imdxy14l6-nix-shell.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy