187                     return Err(Error::sys()).context(  in check_state()
232             Err(e) => return Some(Err(e)),  in do_serialized()
261             if let Err(e) = sender.send((new_state, result)) {  in do_serialized()
267             Err(e) => {  in do_serialized()
268                 return Some(Err(e).context("In do_serialized. Failed to receive from the sender."))  in do_serialized()
300             Err(e) => match e.root_cause().downcast_ref::<Error>() {  in with_try_migrate()
302                 _ => return Err(e),  in with_try_migrate()
314                         return Err(Error::Rc(ResponseCode::KEY_NOT_FOUND))  in with_try_migrate()
320                 return Err(Error::Rc(ResponseCode::KEY_NOT_FOUND))  in with_try_migrate()
334             Err(Error::Rc(ResponseCode::KEY_NOT_FOUND)).context("Legacy database is empty.")  in with_try_migrate()
354             Err(e) => return Err(e),  in with_try_migrate_super_key()
481                                     return Err(Error::Rc(ResponseCode::LOCKED)).context(concat!(  in check_and_migrate()
492                                     return Err(Error::Rc(ResponseCode::KEY_NOT_FOUND))  in check_and_migrate()
507                         return Err(Error::Rc(ResponseCode::KEY_NOT_FOUND))  in check_and_migrate()
543                     Err(Error::Rc(ResponseCode::KEY_NOT_FOUND))  in check_and_migrate()
559             Err(e) => Err(e),  in check_and_migrate()
593             Err(Error::Rc(ResponseCode::KEY_NOT_FOUND))  in check_and_migrate_super_key()