CI / Security audit (RUSTSEC) (pull_request) Failing after 2m15s
CI / Build + Clippy + Test (pull_request) Failing after 31m46s
rsproxy.cn/rustup returns 404 for /dist/x86_64-unknown-linux-gnu/ rustup-init — different path structure from static.rust-lang.org. Switch to mirrors.ustc.edu.cn/rust-static which is a full mirror with identical path structure.