<!-- < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < ☺ v ✰ Thanks for opening an issue! ✰ v Before smashing the submit button please review the template. v Please also ensure that this is not a duplicate issue :) ☺ > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -->∂ ## Summary of Bug The branch `constraints` isn't building with latest dependencies. ## Version (https://github.com/arkworks-rs/marlin/commit/903c741e038be240d1c80622a843c4b011965d75) ## Steps to Reproduce `$ cargo build`