1 // Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution.
4 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
5 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
7 // option. This file may not be copied, modified, or distributed
8 // except according to those terms.
12 #![allow(unused_must_use)]
13 #![warn(clippy::writeln_empty_string)]
17 let mut v = Vec::new();
22 let mut suggestion = Vec::new();
23 writeln!(&mut suggestion);
25 // These should be fine
27 writeln!(&mut v, " ");