Fix error in nightly

[oxarbitrage]

We have an error in nightly https://github.com/ZcashFoundation/zcash_script/actions/runs/8645584991/job/23703053209#step:4:318

I think we need to fix it in the halo2_gadgets crate. This ticket is to keep track of it.

I think we can still do the release #141 with this error if we want as it might get time to fix, get review, include it in a zcash release, etc.

[oxarbitrage]

This was actually fixed upstream by rust so we don't have to do anything and the problem is solved.