AsRef antipattern

From: https://www.philipdaniels.com/blog/2019/rust-api-design/

AsRef is useful where you only need to borrow the input parameter. If you find yourself doing

let x = param.as_ref().to_owned();

You're doing it wrong. Use Into trait instead.

let x = param.into();

Example:

use std::path::Path;
use std::ffi::{OsString, OsStr};
pub fn foo() {
    let path = Path::new("/usr/bin");
    let _x = OsStr::to_owned(path.as_ref());
    // Should be rewritten as
    let _x: OsString = path.into();
}

Start by reading the linked Rust API design article and the issue's AsRef and Into examples. Then locate the relevant Clippy lint entry points and tests for similar API-pattern lints. Done means identifying this antipattern reliably and covering the proposed rewrite behavior with tests.