these 2 derivations will be built:
  /nix/store/qzn1p00c8hlg34ihlwcg3x37aj3yfkgg-closure-info.drv
  /nix/store/p1n7dqhv83nvb3bylp99r4rqmacz3qiq-check-vars.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy