Function rustc::session::config::opt::unstable [−][src]
fn unstable<F>(name: &'static str, f: F) -> RustcOptGroup where
F: Fn(&mut Options) -> &mut Options + 'static,
🔬 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?