= note: expected type ()
              found type futures::future::and_then::AndThen<futures::stream::concat::Concat2<hyper::body::body::Body>, futures::future::or_else::OrElse<futures::future::map::Map<futures::future::and_then::AndThen<futures::future::and_then::AndThen<futures::future::map_err::MapErr<futures::future::result_::FutureResult<contract::Update, serde_json::error::Error>, [closure@src\main.rs:139:22: 144:14]>, std::result::Result<(contract::User, std::string::String, i64, i64), http::response::Response<hyper::body::body::Body>>, [closure@src\main.rs:145:23: 162:14]>, futures::future::map_err::MapErr<futures::future::and_then::AndThen<impl futures::future::Future, futures::future::either::Either<futures::future::and_then::AndThen<impl futures::future::Future, futures::future::either::Either<futures::future::then::Then<impl futures::future::Future, futures::future::either::Either<impl futures::future::Future, futures::future::result_::FutureResult<(), telegram_client::TelegramClientError>>, [clo…