error[E0277]: the trait bound `Foo: BindgenType` is not satisfied
 --> tests/compile_fail/impl_registration.rs:8:6
  |
8 | impl Foo {
  |      ^^^ the trait `BindgenType` is not implemented for `Foo`
  |
note: required by a bound in `_assert_impl`
 --> tests/compile_fail/impl_registration.rs:7:1
  |
7 | #[deno_bindgen]
  | ^^^^^^^^^^^^^^^ required by this bound in `_assert_impl`
  = note: this error originates in the attribute macro `deno_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)