1error[E0283]: type annotations needed
2 --> tests/ui/unpin_impl.rs:4:14
3  |
44 |         type Opaque;
5  |              ^^^^^^ cannot infer type
6  |
7note: multiple `impl`s satisfying `ffi::Opaque: __AmbiguousIfImpl<_>` found
8 --> tests/ui/unpin_impl.rs:1:1
9  |
101 | #[cxx::bridge]
11  | ^^^^^^^^^^^^^^
12  = note: this error originates in the attribute macro `cxx::bridge` (in Nightly builds, run with -Z macro-backtrace for more info)
13