1 use std::hash::BuildHasher;
4 let bh = std::collections::hash_map::RandomState::new();
5 let h = bh.build_hasher();
6 h.finish() //~ ERROR no method named `finish` found for struct `DefaultHasher`
10 impl Bar for String {}
13 let s = String::from("hey");
15 x.as_ref(); //~ ERROR the method `as_ref` exists for reference `&dyn Bar`, but its trait bounds