34     tracer: T,  field
1089         let tracer = TestTracer(Arc::new(Mutex::new(None)));  in dynamic_span_names()  localVariable
1107         let tracer = TestTracer(Arc::new(Mutex::new(None)));  in span_kind()  localVariable
1120         let tracer = TestTracer(Arc::new(Mutex::new(None)));  in span_status_code()  localVariable
1141         let tracer = TestTracer(Arc::new(Mutex::new(None)));  in span_status_message()  localVariable
1165         let tracer = TestTracer(Arc::new(Mutex::new(None)));  in trace_id_from_existing_context()  localVariable
1188         let tracer = TestTracer(Arc::new(Mutex::new(None)));  in includes_timings()  localVariable
1210         let tracer = TestTracer(Arc::new(Mutex::new(None)));  in records_error_fields()  localVariable
1272         let tracer = TestTracer(Arc::new(Mutex::new(None)));  in includes_span_location()  localVariable
1292         let tracer = TestTracer(Arc::new(Mutex::new(None)));  in excludes_span_location()  localVariable
1318         let tracer = TestTracer(Arc::new(Mutex::new(None)));  in includes_thread()  localVariable
1337         let tracer = TestTracer(Arc::new(Mutex::new(None)));  in excludes_thread()  localVariable
1356         let tracer = TestTracer(Arc::new(Mutex::new(None)));  in propagates_error_fields_from_event_to_span()  localVariable