60 // cases where the none arm isn't a constant expression
61 // are not linted due to potential ownership issues
63 // ownership issue example, don't lint
65 let mut option: Option<NonCopyable> = None;
69 option = Some(NonCopyable);
75 // ownership issue example, don't lint
76 let option: Option<&str> = None;
79 None => &format!("{} {}!", "hello", "world"),