use rustc_span::Span;
use syntax::ast;
-use rustc::hir;
-use rustc::hir::def_id::{DefId, LOCAL_CRATE};
-use rustc::hir::itemlikevisit::ItemLikeVisitor;
-use rustc::hir::print::visibility_qualified;
-use rustc::util::nodemap::DefIdSet;
-
use rustc_data_structures::fx::FxHashMap;
+use rustc_hir as hir;
+use rustc_hir::def_id::{DefId, DefIdSet, LOCAL_CRATE};
+use rustc_hir::itemlikevisit::ItemLikeVisitor;
+use rustc_hir::print::visibility_qualified;
pub fn check_crate(tcx: TyCtxt<'_>) {
let mut used_trait_imports = DefIdSet::default();