these 2 derivations will be built:
  /nix/store/kb3shmgakl421lajm2rs9zhc7g6y4zy6-closure-info.drv
  /nix/store/m2y7xw1fww7qyaznypldz38hvq16pmaz-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