error[E0277]: the trait bound `for<'de> Struct: serde::de::Deserialize<'de>` is not satisfied
 --> tests/debug_handler/fail/json_not_deserialize.rs:7:23
  |
7 | async fn handler(foo: Json<Struct>) {}
  |                       ^^^^^^^^^^^^ the trait `for<'de> serde::de::Deserialize<'de>` is not implemented for `Struct`
  |
  = help: the following other types implement trait `serde::de::Deserialize<'de>`:
            bool
            char
            isize
            i8
            i16
            i32
            i64
            i128
          and $N others
  = note: required for `Struct` to implement `serde::de::DeserializeOwned`
  = note: required for `Json<Struct>` to implement `FromRequest<()>`
  = help: see issue #48214
  = help: add `#![feature(trivial_bounds)]` to the crate attributes to enable