these 2 derivations will be built:
  /nix/store/jcksb2x6500g43jyvnbzmardiqmcn6z5-closure-info.drv
  /nix/store/70wl32bqs3nv4lsj9l0lkaf8l9byx9y0-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