these 2 derivations will be built:
  /nix/store/85ga5n6gfdy591mqhhf2h2yv3aspl6x9-closure-info.drv
  /nix/store/fsw7lild1d5kfjhsfi31188wb9408l8w-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