these 2 derivations will be built:
  /nix/store/0jd52l68w16g4p05gfpyjapa6lv9brdz-closure-info.drv
  /nix/store/rx03zrsw857cjpykgblm942azj5a9c74-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