these 2 derivations will be built:
  /nix/store/2j54s4hjpw611k29blg1fc9m92kiv63n-tofu.drv
  /nix/store/jmblc25z1fpfg7i6grihm7p9y1j542yl-dns.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy