957         let allow_safe = false;  in parse_rest_of_item()  localVariable
958         let mut item = if lookahead.peek(Token![fn]) || peek_signature(&ahead, allow_safe) {  in parse_rest_of_item()
1495     fn peek_signature(input: ParseStream, allow_safe: bool) -> bool {  in peek_signature()
1499             && ((allow_safe  in peek_signature()
1510             let allow_safe = false;  in parse()  localVariable
1511             parse_signature(input, allow_safe).map(Option::unwrap)  in parse()
1515     fn parse_signature(input: ParseStream, allow_safe: bool) -> Result<Option<Signature>> {  in parse_signature()
1519         let safe = allow_safe  in parse_signature()
1849             let allow_safe = true;  in parse()  localVariable
1850             let mut item = if lookahead.peek(Token![fn]) || peek_signature(&ahead, allow_safe) {  in parse()
1852                 let sig = parse_signature(input, allow_safe)?;  in parse()
2340             let allow_safe = false;  in parse()  localVariable
2341             let mut item = if lookahead.peek(Token![fn]) || peek_signature(&ahead, allow_safe) {  in parse()
2678             let allow_safe = false;  in parse()  localVariable
2679             let mut item = if lookahead.peek(Token![fn]) || peek_signature(&ahead, allow_safe) {  in parse()