Rust 1.79 on my PowerPC MUSL machine fails to build the getrandom v0.2.15 crate with a segfault. Same with earlier versions down to 1.75, which builds it just fine, the difference being, the latter is built with LLVM15 and newer ones — with LLVM17. This gives us our main culprit.
It's truly appalling that LLVM keeps breaking a rather stale architecture so often 😩