error[E0658]: `may_dangle` has unstable semantics and may be removed in the future --> $DIR/feature-gate-may-dangle.rs:6:13 | LL | unsafe impl<#[may_dangle] A> Drop for Pt { | ^^^^^^^^^^^^^ | = note: for more information, see https://github.com/rust-lang/rust/issues/34761 = help: add `#![feature(dropck_eyepatch)]` to the crate attributes to enable error: aborting due to previous error For more information about this error, try `rustc --explain E0658`.