| error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync` | |
| --> $DIR/issue-49983-see-issue-0.rs:4:30 | |
| | | |
| LL | #[allow(unused_imports)] use core::ptr::Unique; | |
| | ^^^^^^^^^^^^^^^^^ | |
| | | |
| = help: add `#![feature(ptr_internals)]` to the crate attributes to enable | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0658`. |