error[E0119]: conflicting implementations of trait `Unpin` for type `Foo<MyPhantomPinned, ()>` --> tests/ui/pin_project/negative_impls_stable.rs:5:1 | 5 | / pin_project_lite::pin_project! { 6 | | struct Foo<Pinned, Unpinned> { 7 | | #[pin] 8 | | pinned: Pinned, ... | 11 | | } | |_^ conflicting implementation for `Foo<MyPhantomPinned, ()>` ... 15 | impl Unpin for Foo<MyPhantomPinned, ()> {} | --------------------------------------- first implementation here | = note: this error originates in the macro `$crate::__pin_project_make_unpin_impl` which comes from the expansion of the macro `pin_project_lite::pin_project` (in Nightly builds, run with -Z macro-backtrace for more info)