New comment by jnbr on void-packages repository

https://github.com/void-linux/void-packages/issues/12058#issuecomment-497943573
Comment:
Interesting. Cargo doesn't ship with a `Caro.lock` file, so the versions of the dependencies can change and the builds aren't reproducible. The problem is most likely because of a change in the rust `libc` crate between version 0.2.56 and 0.2.57.