{"ast_node_type":"variable","tokens":[{"end":62,"kind":"keyword","start":0,"text":"let"}]}
                    let eq_lt = maybe_eq_tok.span.to(lt_span);
                if maybe_eq_tok == TokenKind::Eq && maybe_eq_tok.span.hi() == lt_span.lo() {
                    err.span_suggestion(eq_lt, "did you mean", "<=", Applicability::Unspecified);