these 2 derivations will be built:
  /nix/store/jv4dafm8s972yj4crcrri2w3sjyhsc42-closure-info.drv
  /nix/store/qfbw0nkk623g9l883smqy4hidmf4ciry-check-vars.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy