these 2 derivations will be built:
  /nix/store/js6rb39lfh7c03qdsdilgiaz4p8gyqal-closure-info.drv
  /nix/store/1pdqmdkhvcvfnbc88qv5z4z3pppvpaks-check-vars.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy