106         let mut formatter = FieldFormatter::for_span(span.metadata().name());  in on_new_span()  localVariable
107         attrs.record(&mut formatter);  in on_new_span()
108         span.extensions_mut().insert(formatter);  in on_new_span()
130             let formatter = span_extensions.get::<FieldFormatter>().unwrap();  in on_enter()  localVariable
131             atrace::atrace_begin(self.tag, formatter.as_str());  in on_enter()
149             let mut formatter = FieldFormatter::for_event();  in on_event()  localVariable
150             event.record(&mut formatter);  in on_event()
151             atrace::atrace_instant(self.tag, formatter.as_str());  in on_event()
198         let mut formatter = FieldFormatter { is_event: false, ..FieldFormatter::new() };  in for_span()  localVariable
199         formatter.s.push_str(span_name);  in for_span()
200         formatter  in for_span()