//readfile1.rs // How would you read a file without a &mut File. // Find a suitable type that implements Read and Write trait to read a File. // Make me compile! Execute `rustlings hint readfile1` for hints use std::fs::File; fn main() { let path = "exercises/stdio/dummy.txt"; let file = File::open(path).expect("No file dummy.txt"); // Don't Change this line. let mut buf = ???; file.read_to_string(&mut but); println!("{}", s); }