error: consider using `Option<T>` instead of `Option<Option<T>>` or a custom enum if you need to distinguish all 3 cases --> $DIR/option_option.rs:4:13 | LL | fn input(_: Option<Option<u8>>) {} | ^^^^^^^^^^^^^^^^^^ | note: the lint level is defined here --> $DIR/option_option.rs:1:9 | LL | #![deny(clippy::option_option)] | ^^^^^^^^^^^^^^^^^^^^^ error: consider using `Option<T>` instead of `Option<Option<T>>` or a custom enum if you need to distinguish all 3 cases --> $DIR/option_option.rs:6:16 | LL | fn output() -> Option<Option<u8>> { | ^^^^^^^^^^^^^^^^^^ error: consider using `Option<T>` instead of `Option<Option<T>>` or a custom enum if you need to distinguish all 3 cases --> $DIR/option_option.rs:10:27 | LL | fn output_nested() -> Vec<Option<Option<u8>>> { | ^^^^^^^^^^^^^^^^^^ error: consider using `Option<T>` instead of `Option<Option<T>>` or a custom enum if you need to distinguish all 3 cases --> $DIR/option_option.rs:15:30 | LL | fn output_nested_nested() -> Option<Option<Option<u8>>> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^ error: consider using `Option<T>` instead of `Option<Option<T>>` or a custom enum if you need to distinguish all 3 cases --> $DIR/option_option.rs:20:8 | LL | x: Option<Option<u8>>, | ^^^^^^^^^^^^^^^^^^ error: consider using `Option<T>` instead of `Option<Option<T>>` or a custom enum if you need to distinguish all 3 cases --> $DIR/option_option.rs:24:23 | LL | fn struct_fn() -> Option<Option<u8>> { | ^^^^^^^^^^^^^^^^^^ error: consider using `Option<T>` instead of `Option<Option<T>>` or a custom enum if you need to distinguish all 3 cases --> $DIR/option_option.rs:30:22 | LL | fn trait_fn() -> Option<Option<u8>>; | ^^^^^^^^^^^^^^^^^^ error: consider using `Option<T>` instead of `Option<Option<T>>` or a custom enum if you need to distinguish all 3 cases --> $DIR/option_option.rs:34:11 | LL | Tuple(Option<Option<u8>>), | ^^^^^^^^^^^^^^^^^^ error: consider using `Option<T>` instead of `Option<Option<T>>` or a custom enum if you need to distinguish all 3 cases --> $DIR/option_option.rs:35:17 | LL | Struct { x: Option<Option<u8>> }, | ^^^^^^^^^^^^^^^^^^ error: consider using `Option<T>` instead of `Option<Option<T>>` or a custom enum if you need to distinguish all 3 cases --> $DIR/option_option.rs:76:14 | LL | foo: Option<Option<Cow<'a, str>>>, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: aborting due to 10 previous errors