[−][src]Function rustc::middle::stability::duplicate_feature_err
fn duplicate_feature_err(sess: &Session, span: Span, feature: Symbol)
🔬 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?