these 2 derivations will be built:
  /nix/store/c05y61ry45m0h2ma4a3czrd0mx5px4f5-closure-info.drv
  /nix/store/aq6y8il3dz8sn8iz5w24xnnph5r4w3bh-check-vars.drv
error: path '/nix/store/9rayrv19k4say47zxvpirxiw42z9c62x-check-vars' is not valid
error: Cannot build '/nix/store/aq6y8il3dz8sn8iz5w24xnnph5r4w3bh-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/9rayrv19k4say47zxvpirxiw42z9c62x-check-vars