error[E0658]: compiler plugins are experimental and possibly buggy --> $DIR/gated-plugin.rs:3:1 | LL | #![plugin(attr_plugin_test)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: for more information, see https://github.com/rust-lang/rust/issues/29597 = help: add #![feature(plugin)] to the crate attributes to enable error: aborting due to previous error For more information about this error, try `rustc --explain E0658`.