these 2 derivations will be built:
  /nix/store/0hzhdnh8zxhc8apz0p10wbgzxzyzrlfs-iets-conformance-adapter.drv
  /nix/store/hglfc04d4ndsz7llm1wvq0z3hdg03xf8-nix-conformance-iets.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy