Should static variables be annotated `&'static` or not?

[wpd]

According to the text in src/ch19-01-unsafe-rust.md, "we must annotate the variable’s type, which is &'static str", but the example shown in listings/ch19-advanced-features/listing-19-09/src/main.rs is:

static HELLO_WORLD: &str = "Hello, world!";

fn main() {
    println!("name is: {}", HELLO_WORLD);
}

which does not declare HELLO_WORLD as &'static str. This could be confusing to other newbies (besides myself :-) ).

[steveklabnik]

This is basically a bug in the book, you used to have to, but don't any more. We should update the text for sure :)

[carols10cents]

Fixed in #2692.