these 2 derivations will be built:
  /nix/store/fjc3bsyfmnpv865vbwpliscgfhmm1dfc-closure-info.drv
  /nix/store/b6rn2xc9javfvvyxhgfjfi6ihmm1k965-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