| error[E0658]: the `linkage` attribute is experimental and not portable across platforms | |
| --> $DIR/linkage4.rs:1:1 | |
| | | |
| LL | #[linkage = "external"] | |
| | ^^^^^^^^^^^^^^^^^^^^^^^ | |
| | | |
| = note: see issue #29603 <https://github.com/rust-lang/rust/issues/29603> for more information | |
| = help: add `#![feature(linkage)]` to the crate attributes to enable | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0658`. |