1 files changed, 1 insertions, 1 deletions
diff --git a/components/plugins/lints.rs b/components/plugins/lints.rs
index c48eeed9c80..d5891cc9c5a 100644
--- a/components/plugins/lints.rs
+++ b/components/plugins/lints.rs
@@ -78,7 +78,7 @@ fn lint_unrooted_ty(cx: &Context, ty: &ast::Ty, warning: &str) {
         ast::TyVec(ref t) | ast::TyFixedLengthVec(ref t, _) |
         ast::TyPtr(ast::MutTy { ty: ref t, ..}) | ast::TyRptr(_, ast::MutTy { ty: ref t, ..}) => lint_unrooted_ty(cx, &**t, warning),
         ast::TyPath(_, _, id) => {
-                match cx.tcx.def_map.borrow().get_copy(&id) {
+                match cx.tcx.def_map.borrow()[id].clone() {
                     def::DefTy(def_id, _) => {
                         if ty::has_attr(cx.tcx, def_id, "must_root") {
                             cx.span_lint(UNROOTED_MUST_ROOT, ty.span, warning);