diff --git a/components/script_plugins/unrooted_must_root.rs b/components/script_plugins/unrooted_must_root.rs
index 4e01f6d2efb..81dece8fdd5 100644
--- a/components/script_plugins/unrooted_must_root.rs
+++ b/components/script_plugins/unrooted_must_root.rs
@@ -4,7 +4,6 @@
 
 use rustc::hir::{self, ExprKind};
 use rustc::hir::intravisit as visit;
-use rustc::hir::map as ast_map;
 use rustc::lint::{LateContext, LintPass, LintArray, LateLintPass, LintContext};
 use rustc::ty;
 use syntax::{ast, source_map, symbol::Ident};
@@ -91,7 +90,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for UnrootedPass {
                         _gen: &hir::Generics,
                         id: ast::NodeId) {
         let item = match cx.tcx.hir.get(id) {
-            ast_map::Node::NodeItem(item) => item,
+            hir::Node::Item(item) => item,
             _ => cx.tcx.hir.expect_item(cx.tcx.hir.get_parent(id)),
         };
         if item.attrs.iter().all(|a| !a.check_name("must_root")) {
diff --git a/rust-toolchain b/rust-toolchain
index 1372f1ddb7b..8cf661266f8 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2018-08-27
+nightly-2018-08-29