Interesting tidbit about Rust as used in the Android OS: to prevent the trusting trust attack, and not rely on rust-lang.org build, they bootstrapped rustc 1.19 with mrustc (0.8.0), and then built all following rustc versions with their previous version.
https://cs.android.com/android/platform/superproject/main/+/main:prebuilts/rust/bootstrap/README.md
#RustLang #Android #Toolchains #Bootstrapping #TrustingTrust