these 2 derivations will be built:
  /nix/store/chh1xwkd47wjfn3yhhivkicvsp5rsc2c-iets-0.1.0.drv
  /nix/store/6ph9xs1bkb0m99pg7s076z9pa7lbfi7y-iets-diff-e2e.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy