{"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"//"}]}
        // FIXME(#120456) - is `swap_remove` correct?
    pub(crate) fn get_buffered_mut_error(&mut self, span: Span) -> Option<(Diag<'infcx>, usize)> {
        self.diags_buffer.buffered_mut_errors.swap_remove(&span)