diff --git a/rust-version b/rust-version
index 087b7c66427..69d072f1bfa 100644
--- a/rust-version
+++ b/rust-version
@@ -1 +1 @@
-nightly-2018-12-03
+nightly-2018-12-08
diff --git a/src/bin/miri-rustc-tests.rs b/src/bin/miri-rustc-tests.rs
index 6fa9b817ffe..92d4237146d 100644
--- a/src/bin/miri-rustc-tests.rs
+++ b/src/bin/miri-rustc-tests.rs
@@ -93,7 +93,7 @@ fn after_analysis<'a, 'tcx>(state: &mut CompileState<'a, 'tcx>) {
             fn visit_item(&mut self, i: &'hir hir::Item) {
                 if let hir::ItemKind::Fn(.., body_id) = i.node {
                     if i.attrs.iter().any(|attr| attr.name() == "test") {
-                        let did = self.0.hir.body_owner_def_id(body_id);
+                        let did = self.0.hir().body_owner_def_id(body_id);
                         println!("running test: {}", self.0.def_path_debug_str(did));
                         miri::eval_main(self.0, did, /*validate*/true);
                         self.1.session.abort_if_errors();
@@ -105,7 +105,7 @@ fn after_analysis<'a, 'tcx>(state: &mut CompileState<'a, 'tcx>) {
         }
         state.hir_crate.unwrap().visit_all_item_likes(&mut Visitor(tcx, state));
     } else if let Some((entry_node_id, _, _)) = *state.session.entry_fn.borrow() {
-        let entry_def_id = tcx.hir.local_def_id(entry_node_id);
+        let entry_def_id = tcx.hir().local_def_id(entry_node_id);
         miri::eval_main(tcx, entry_def_id, /*validate*/true);
 
         state.session.abort_if_errors();
diff --git a/src/bin/miri.rs b/src/bin/miri.rs
index 1bbf3c8c4a4..e88c13305d1 100644
--- a/src/bin/miri.rs
+++ b/src/bin/miri.rs
@@ -128,7 +128,7 @@ fn after_analysis<'a, 'tcx>(
                         attr.name() == "test"
                     })
                     {
-                        let did = self.tcx.hir.body_owner_def_id(body_id);
+                        let did = self.tcx.hir().body_owner_def_id(body_id);
                         println!(
                             "running test: {}",
                             self.tcx.def_path_debug_str(did),
@@ -145,7 +145,7 @@ fn after_analysis<'a, 'tcx>(
             &mut Visitor { tcx, state, validate }
         );
     } else if let Some((entry_node_id, _, _)) = *state.session.entry_fn.borrow() {
-        let entry_def_id = tcx.hir.local_def_id(entry_node_id);
+        let entry_def_id = tcx.hir().local_def_id(entry_node_id);
         miri::eval_main(tcx, entry_def_id, validate);
 
         state.session.abort_if_errors();