these 2 derivations will be built:
  /nix/store/xc9xipl43ihiarr510j051x5ksb65a7g-closure-info.drv
  /nix/store/achi5ammm3vbn58ras0ndi1ry1nr7767-check-vars.drv
error: path '/nix/store/fs0r7rg7b95c91d4z5ag564621i8cmq1-check-vars' is not valid
error: Cannot build '/nix/store/achi5ammm3vbn58ras0ndi1ry1nr7767-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/fs0r7rg7b95c91d4z5ag564621i8cmq1-check-vars