///
/// This function must be called immediately after the option token is parsed.
/// Otherwise, the suggestion will be incorrect.
-fn err_duplicate_option<'a>(p: &mut Parser<'a>, symbol: Symbol, span: Span) {
+fn err_duplicate_option(p: &mut Parser<'_>, symbol: Symbol, span: Span) {
let mut err = p
.sess
.span_diagnostic