error[E0658]: use of unstable library feature 'unsafe_pin_internals' --> $DIR/cant_access_internals.rs:11:15 | LL | mem::take(phantom_pinned.pointer); | ^^^^^^^^^^^^^^^^^^^^^^ | = help: add `#![feature(unsafe_pin_internals)]` to the crate attributes to enable error: aborting due to previous error For more information about this error, try `rustc --explain E0658`.