these 2 derivations will be built:
  /nix/store/wwkv2gavhbb7gbqdj9lnk7i7gm2pifak-closure-info.drv
  /nix/store/7lf3gzmsh22nggm9v0jsy1g7dp8xx7m0-check-vars.drv
error: path '/nix/store/mavcgjd8f1ms6s1262sddlxbj4bvapg1-check-vars' is not valid
error: Cannot build '/nix/store/7lf3gzmsh22nggm9v0jsy1g7dp8xx7m0-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/mavcgjd8f1ms6s1262sddlxbj4bvapg1-check-vars