error[E0277]: the trait bound `A: IntoWasmAbi` is not satisfied
 --> ui-tests/traits-not-implemented.rs:5:1
  |
5 | #[wasm_bindgen]
  | ^^^^^^^^^^^^^^^ the trait `IntoWasmAbi` is not implemented for `A`
  |
  = help: the following other types implement trait `IntoWasmAbi`:
            bool
            char
            isize
            i8
            i16
            i32
            i64
            usize
          and $N others
  = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)