use pin_project::{pin_project, pinned_drop}; use std::pin::Pin; #[pin_project] //~ ERROR E0119 struct Foo { #[pin] f1: T, f2: U, } impl Drop for Foo { fn drop(&mut self) {} } #[pin_project(PinnedDrop)] //~ ERROR E0119 struct Bar { #[pin] f1: T, f2: U, } #[pinned_drop] impl PinnedDrop for Bar { fn drop(self: Pin<&mut Self>) {} } impl Drop for Bar { fn drop(&mut self) {} } fn main() {}