error: Invalid attribute: only `#[codec(dumb_trait_bound)]`, `#[codec(crate = path::to::crate)]`, `#[codec(encode_bound(T: Encode))]`, `#[codec(decode_bound(T: Decode))]`, `#[codec(decode_bound_with_mem_tracking_bound(T: DecodeWithMemTracking))]` or `#[codec(mel_bound(T: MaxEncodedLen))]` are accepted as top attribute
 --> tests/max_encoded_len_ui/incomplete_attr.rs:4:9
  |
4 | #[codec(crate)]
  |         ^^^^^

error[E0277]: the trait bound `Example: Encode` is not satisfied
 --> tests/max_encoded_len_ui/incomplete_attr.rs:5:8
  |
5 | struct Example;
  |        ^^^^^^^ the trait `WrapperTypeEncode` is not implemented for `Example`, which is required by `Example: Encode`
  |
  = help: the following other types implement trait `WrapperTypeEncode`:
            &T
            &mut T
            Arc<T>
            Box<T>
            Cow<'a, T>
            Rc<T>
            String
            Vec<T>
            parity_scale_codec::Ref<'a, T, U>
  = note: required for `Example` to implement `Encode`
note: required by a bound in `MaxEncodedLen`
 --> src/max_encoded_len.rs
  |
  | pub trait MaxEncodedLen: Encode {
  |                          ^^^^^^ required by this bound in `MaxEncodedLen`

error[E0277]: the trait bound `Example: Encode` is not satisfied
 --> tests/max_encoded_len_ui/incomplete_attr.rs:8:10
  |
8 |     let _ = Example::max_encoded_len();
  |             ^^^^^^^ the trait `WrapperTypeEncode` is not implemented for `Example`, which is required by `Example: Encode`
  |
  = help: the following other types implement trait `WrapperTypeEncode`:
            &T
            &mut T
            Arc<T>
            Box<T>
            Cow<'a, T>
            Rc<T>
            String
            Vec<T>
            parity_scale_codec::Ref<'a, T, U>
  = note: required for `Example` to implement `Encode`
note: required by a bound in `max_encoded_len`
 --> src/max_encoded_len.rs
  |
  | pub trait MaxEncodedLen: Encode {
  |                          ^^^^^^ required by this bound in `MaxEncodedLen::max_encoded_len`
  |     /// Upper bound, in bytes, of the maximum encoded size of this item.
  |     fn max_encoded_len() -> usize;
  |        --------------- required by a bound in this associated function