There is a new pull request by jcgruenhage against master on the void-packages repository

https://github.com/jcgruenhage/void-packages rustup-1.21.1_1
https://github.com/void-linux/void-packages/pull/17922

rustup: update to 1.21.1.
None

A patch file from https://github.com/void-linux/void-packages/pull/17922.patch is attached