borrow.rs

extern crate reqwest;

fn main() {
    foo(String::from("foo"));
}

fn foo(s: String) -> Result<(), ()> {
    let _ = reqwest::multipart::Part::reader(s.as_bytes());
    Ok(())
}

/*
error[E0597]: `s` does not live long enough
  --> src/main.rs:8:46
   |
8  |     let _ = reqwest::multipart::Part::reader(s.as_bytes());
   |                                              ^ borrowed value does not live long enough
9  |     Ok(())
10 | }
   | - borrowed value only lives until here
   |
   = note: borrowed value must be valid for the static lifetime...
   */