error[E0308]: arguments to this function are incorrect while building substrate

[h4n0]

Seems my substrate build was broken after cargo updated the ring-proof to 665f5f51.

error[E0308]: arguments to this function are incorrect
   --> /Users/han/.cargo/git/checkouts/ring-vrf-fa8519651343a7ee/4b09416/bandersnatch_vrfs/src/ring.rs:85:9
    |
85  |         ring::index(self.pcs_params.clone(), &self.piop_params, pks).0
    |         ^^^^^^^^^^^
    |
note: expected `&_`, found `URS<Bls12<Config>>`
   --> /Users/han/.cargo/git/checkouts/ring-vrf-fa8519651343a7ee/4b09416/bandersnatch_vrfs/src/ring.rs:85:21
    |

It took me some time to identify and locate this, and my workaround is to downgrade it to the previous version by doing:

cargo update -p ring@0.1.0 --precise 626c9598

Please take a look at this issue.

[davxy]

This is not a ring-proof issue.
The issue is that bandersnatch_vrfs has this as a git dependency without specify a revision. I'm on it

[davxy]

Fixed by: w3f/ring-vrf#92 and w3f/ring-vrf#93