these 2 derivations will be built:
  /nix/store/jwama4ff747hfgzxpha6jxlp8cd4hfim-iets-0.1.0.drv
  /nix/store/by0dxh62i6yy489k3svlp41g5jghmf20-iets-linttest.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy