these 2 derivations will be built:
  /nix/store/nz7hbaai93c3kh1f9rlw78m2hl1zj05r-closure-info.drv
  /nix/store/9r8s4bwfv1m2im4szrpr4m2i1wggzcv6-check-vars.drv
error: path '/nix/store/5xckr9995hbsav1gfdx808j88avkcf6z-check-vars' is not valid
error: Cannot build '/nix/store/9r8s4bwfv1m2im4szrpr4m2i1wggzcv6-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/5xckr9995hbsav1gfdx808j88avkcf6z-check-vars