these 2 derivations will be built:
  /nix/store/1lk7rn5ajwf2xbnjn9k29bhy6s2va2ki-closure-info.drv
  /nix/store/hs9ahf41yvp1qwmsf80zs5i9kjc2nvhl-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
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy