error[E0277]: the trait bound `A: wasm_bindgen::convert::traits::IntoWasmAbi` is not satisfied
 --> $DIR/traits-not-implemented.rs:8:12
  |
8 |     pub fn foo(a: A);
  |            ^^^ the trait `wasm_bindgen::convert::traits::IntoWasmAbi` is not implemented for `A`