//! #![feature(plugin_registrar)]
//! #![feature(rustc_private)]
//!
-//! extern crate rustc_plugin;
//! extern crate rustc_driver;
//! extern crate syntax;
//! extern crate syntax_pos;
//!
-//! use rustc_plugin::Registry;
+//! use rustc_driver::plugin::Registry;
//! use syntax::ext::base::{ExtCtxt, MacResult};
//! use syntax_pos::Span;
//! use syntax::tokenstream::TokenTree;