these 2 derivations will be built:
  /nix/store/84l49y8xrndf2f5fyayrlr79maj08jw6-closure-info.drv
  /nix/store/4ij0pw2d58hi296a1haxnbwbcils4yap-check-vars.drv
error: path '/nix/store/5rs0vfy449m2k0ylsnbq845vv5jib5bk-check-vars' is not valid
error: Cannot build '/nix/store/4ij0pw2d58hi296a1haxnbwbcils4yap-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/5rs0vfy449m2k0ylsnbq845vv5jib5bk-check-vars