I know that @josh was working on some changes to how cargo reads the index, and stabilizing renaming dependencies in cargo.toml, that we were thinking of backporting.
If you have any PRs or changes you’d like to get into the 2018 edition then they must be submitted by Wednesday. Please make sure all PRs against the master branch are tagged with beta-nominated (at least). Also to track them I’m going to make sure they’re on the “Rust 2018 Release” milestone to ensure we have a one-stop shop of remaining work.
If you’ve got any final issues please make sure they’re also on the milestone and cc’d to the relevant teams to prepare a fix!