these 2 derivations will be built:
  /nix/store/swc5rpr18sa9ci22dnapc77fj9kmgbsf-closure-info.drv
  /nix/store/ka343pn8pqqxnzlprcnl3s70zn48c6dk-check-vars.drv
error: path '/nix/store/xl5jx292lg3zabigsh54pz28sxb8h8n9-check-vars' is not valid
error: Cannot build '/nix/store/ka343pn8pqqxnzlprcnl3s70zn48c6dk-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/xl5jx292lg3zabigsh54pz28sxb8h8n9-check-vars