Test i686 builds in travis?

1

I'm looking for a way to test 32bit builds automatically via travis.yml.

So far I've found: https://github.com/carllerche/travis-rust-matrix

but I wonder if there's anything simpler?

2

I was suggested this as well: GitHub - japaric/trust: Travis CI and AppVeyor template to test your Rust crate on 5 architectures and publish binary releases of it for Linux, macOS and Windows

3

I am using cargo cross.