* Also build rust on arm64
* rust: use cargo-binstall for performance
Since linux/arm64 images are built using QEMU, the compilation of bindgen-cli, cbindgen, cargo-audit & cargo-outdated takes a very long time, especially on Ubuntu 20.04 (more than 6 hours, for the combination of both architectures on one job). This exceeds the github actions time-limit.
So, we'll just use pre-built binaries using cargo-binstall where possible.
Claus F. Strasburger
3150f2e8b4