41             internal: Arc::new(ReceiverReportInternal {  in build_rr()
48                 streams: Mutex::new(HashMap::new()),  in build_rr()
49                 close_rx: Mutex::new(Some(close_rx)),  in build_rr()
52             wg: Mutex::new(Some(WaitGroup::new())),  in build_rr()
53             close_tx: Mutex::new(Some(close_tx)),  in build_rr()
60             internal: Arc::new(SenderReportInternal {  in build_sr()
67                 streams: Mutex::new(HashMap::new()),  in build_sr()
68                 close_rx: Mutex::new(Some(close_rx)),  in build_sr()
71             wg: Mutex::new(Some(WaitGroup::new())),  in build_sr()
72             close_tx: Mutex::new(Some(close_tx)),  in build_sr()
80             Ok(Arc::new(self.build_rr()))  in build()
82             Ok(Arc::new(self.build_sr()))  in build()