Currently, the Rust components are built differently on Android vs Linux. We are missing Rust support in our GN toolchain so we currently build the Rust libraries as a staticlib and link in C++. This may change in the future once we have better support.
For now, you can build all of the Rust code using Cargo.
There are some dependencies:
You should use
build.py at the root to do your Rust builds so that it correctly points your dependencies towards the vendored crates and sets your $CARGO_HOME to the correct location.