these 2 derivations will be built:
  /nix/store/3f2qb94ffr31y0ifp5dw5vrdk6r9w2jr-closure-info.drv
  /nix/store/2414y6xmmrlldb4yny214imgkyw0ix4n-check-vars.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy