these 2 derivations will be built:
  /nix/store/lj46yxdiahwmg95rn952fhwzzydhrn4i-closure-info.drv
  /nix/store/6r65c457lv7gas5cp3y3r06qyrbj3fcz-check-vars.drv
error: path '/nix/store/rymv3fw2nfjp8p4fldx7896g422cxi9a-check-vars' is not valid
error: Cannot build '/nix/store/6r65c457lv7gas5cp3y3r06qyrbj3fcz-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/rymv3fw2nfjp8p4fldx7896g422cxi9a-check-vars