error: malformed `plugin` attribute input --> $DIR/malformed-plugin-1.rs:2:1 | LL | #![plugin] | ^^^^^^^^^^ help: must be of the form: `#![plugin(name)]` warning: use of deprecated attribute `plugin`: compiler plugins are deprecated. See https://github.com/rust-lang/rust/pull/64675 --> $DIR/malformed-plugin-1.rs:2:1 | LL | #![plugin] | ^^^^^^^^^^ help: may be removed in a future compiler version | = note: `#[warn(deprecated)]` on by default error: aborting due to previous error; 1 warning emitted