these 2 derivations will be built:
  /nix/store/s84gqzw021ds144xmqp258wc5m6gyp1w-closure-info.drv
  /nix/store/79pp7x8dx0n9b19dmx5ag4kncbrp1jxr-check-vars.drv
error: path '/nix/store/8x5ddq87ci0381y9xyrfgap516ns5nkc-check-vars' is not valid
error: Cannot build '/nix/store/79pp7x8dx0n9b19dmx5ag4kncbrp1jxr-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/8x5ddq87ci0381y9xyrfgap516ns5nkc-check-vars