Error-level logging after the server hangs up

[sfackler]

When the server hangs up in an orderly fashion, an error-level log is reported.

[sfackler]

extern crate env_logger;
extern crate tokio_core;
extern crate hyper;
extern crate futures;

use hyper::{Client, Request, Method};
use hyper::header::Connection;
use tokio_core::reactor::Core;
use futures::{Stream, Future};

fn main() {
    env_logger::init();

    let mut core = Core::new().unwrap();
    let handle = core.handle();

    let client = Client::new(&handle);

    let mut request = Request::new(Method::Get, "http://www.google.com".parse().unwrap());
    request.headers_mut().set(Connection::close());

    let f = client.request(request)
        .and_then(|r| {
            r.body().concat2()
        });

    let _ = core.run(f).unwrap();
}

ERROR 2018-01-09T23:04:57Z: hyper::client: client connection error: unexpected EOF waiting for response

[sfackler]

It looks like it first appeared in 0.11.8 (with no_proto turned on there of course).