Clippy? Are you okay?

derpy.rs

warning: use of `unwrap_or` followed by a function call
  --> src/commands/ls.rs:30:33
   |
30 |             let dir = Path::new(options.value_of_os("directory").unwrap_or(state.directory.as_os_str()));
   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this `options.value_of_os("directory").unwrap_or_else(|| state.directory.as_os_str())`
   |
   = note: #[warn(or_fun_call)] on by default
   = help: for further information visit https://github.com/Manishearth/rust-clippy/wiki#or_fun_call