Function rustc::session::config::rustc_optgroups

Important traits for Vec<u8>

impl Write for Vec<u8>

pub fn rustc_optgroups() -> Vec<RustcOptGroup>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Returns all rustc command line options, including metadata for each option, such as whether the option is part of the stable long-term interface for rustc.