I'm new to Rust and it's great but I keep finding situations where I can't get examples from their API docs to compile. It may be something I'm doing but I've banged against it long enough. Simple example from ([https://doc.rust-lang.org/std/io/](https://doc.rust-lang.org/std/io/)) : ~~~

fn main() { let mut f = try!(File::open("foo.txt")); let mut buffer = [0; 10];

// read up to 10 bytes try!(f.read(&mut buffer));

println!("The bytes: {:?}", buffer); } ~~~

The try macro on File::open causes a type ambiguity, error [E0308] which makes sense but are their examples supposed to be psuedo-code?