#[macro_use]
extern crate rustc;
-use rustc::hir::def_id::{DefId, LOCAL_CRATE};
use rustc::ty::query::Providers;
use rustc::ty::TyCtxt;
-use syntax::symbol::sym;
+use rustc_hir::def_id::{DefId, LOCAL_CRATE};
+use rustc_span::symbol::sym;
pub mod codegen_backend;
pub mod link;