```
warning: use of `unwrap_or` followed by a function call
--> examples/ls.rs:15:35
|
15 | let path = env::args().nth(1).unwrap_or(".".into());
| ^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| ".".into())`
|
= note: `#[warn(clippy::or_fun_call)]` on by default
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
```