no method named `read_to_string` found for struct `File` in the current scope

I'm trying to read a file into a string, but i get a compiler error with the message "error[E0599]: no method named read_to_string found for struct File in the current scope"

Can't understand what I'm doing wrong. Here's the offending code below:

impl Todo {
    fn new() -> Result<Todo, std::io::Error> {
        let mut content = String::new();

            .read_to_string(&mut content)?

Versions: cargo: 1.56.0 rustc: 1.56.1 rustup: 1.24.3


  • In order to use the trait method read_to_string, you have to bring Read trait into the scope.

    use std::io::Read;

    See also: