these 2 derivations will be built:
  /nix/store/jinfy3yg3f4v2615jy5fjhcrkz1my5fa-closure-info.drv
  /nix/store/b1v2xh0km9abdzpym137krznacq511qn-check-vars.drv
error: path '/nix/store/hj4idjxbvs8anh7fkv1v1mwbbfin3q8v-check-vars' is not valid
error: Cannot build '/nix/store/b1v2xh0km9abdzpym137krznacq511qn-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/hj4idjxbvs8anh7fkv1v1mwbbfin3q8v-check-vars