these 2 derivations will be built:
  /nix/store/mw1qzyp2pxl9p7c3l6pk7c3b5ckvfizv-closure-info.drv
  /nix/store/pwvybkwvijl01vpd3pj3qgaf4da0r0cj-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
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy