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## feature_err_unstable_feature_bound

# Function feature_err_unstable_feature_bound

Source

    pub fn feature_err_unstable_feature_bound(
        sess: &Session,
        feature: Symbol,
        span: impl Into<MultiSpan>,
        explain: impl Into<DiagMessage>,
    ) -> Diag<'_>

Expand description

This is only used by unstable_feature_bound as it does not have issue number information for now. This is basically the same as `feature_err_issue` but without the feature issue note. If we can do a lookup for issue number from feature name, then we should directly use `feature_err_issue` for ambiguity error of `#[unstable_feature_bound]`.