diff --git a/src/librustc/hir/lowering.rs b/src/librustc/hir/lowering.rs
index 0f69c06c417a..d657b9bbe67e 100644
--- a/src/librustc/hir/lowering.rs
+++ b/src/librustc/hir/lowering.rs
@@ -787,7 +787,7 @@ impl<'a> LoweringContext<'a> {
                         return n;
                     }
                     assert!(!def_id.is_local());
-                    let n = self.sess.cstore.item_generics_cloned(def_id).regions.len();
+                    let n = self.sess.cstore.item_generics_cloned_untracked(def_id).regions.len();
                     self.type_def_lifetime_params.insert(def_id, n);
                     n
                 });
diff --git a/src/librustc/middle/cstore.rs b/src/librustc/middle/cstore.rs
index e21de424d7e3..0b4a2ce71b3c 100644
--- a/src/librustc/middle/cstore.rs
+++ b/src/librustc/middle/cstore.rs
@@ -234,12 +234,6 @@ pub trait CrateStore {
     // access to the metadata loader
     fn metadata_loader(&self) -> &MetadataLoader;
 
-    // item info
-    fn item_generics_cloned(&self, def: DefId) -> ty::Generics;
-
-    // trait/impl-item info
-    fn associated_item_cloned(&self, def: DefId) -> ty::AssociatedItem;
-
     // resolve
     fn def_key(&self, def: DefId) -> DefKey;
     fn def_path(&self, def: DefId) -> hir_map::DefPath;
@@ -255,6 +249,8 @@ pub trait CrateStore {
     fn item_children_untracked(&self, did: DefId, sess: &Session) -> Vec<def::Export>;
     fn load_macro_untracked(&self, did: DefId, sess: &Session) -> LoadedMacro;
     fn extern_mod_stmt_cnum_untracked(&self, emod_id: ast::NodeId) -> Option<CrateNum>;
+    fn item_generics_cloned_untracked(&self, def: DefId) -> ty::Generics;
+    fn associated_item_cloned_untracked(&self, def: DefId) -> ty::AssociatedItem;
 
     // This is basically a 1-based range of ints, which is a little
     // silly - I may fix that.
@@ -308,11 +304,11 @@ impl CrateStore for DummyCrateStore {
         { bug!("crate_data_as_rc_any") }
     // item info
     fn visibility_untracked(&self, def: DefId) -> ty::Visibility { bug!("visibility") }
-    fn item_generics_cloned(&self, def: DefId) -> ty::Generics
+    fn item_generics_cloned_untracked(&self, def: DefId) -> ty::Generics
         { bug!("item_generics_cloned") }
 
     // trait/impl-item info
-    fn associated_item_cloned(&self, def: DefId) -> ty::AssociatedItem
+    fn associated_item_cloned_untracked(&self, def: DefId) -> ty::AssociatedItem
         { bug!("associated_item_cloned") }
 
     // crate metadata
diff --git a/src/librustc/middle/resolve_lifetime.rs b/src/librustc/middle/resolve_lifetime.rs
index a8e98e53db39..c53e255f0cda 100644
--- a/src/librustc/middle/resolve_lifetime.rs
+++ b/src/librustc/middle/resolve_lifetime.rs
@@ -978,7 +978,7 @@ impl<'a, 'tcx> LifetimeContext<'a, 'tcx> {
             } else {
                 let cstore = &self.sess.cstore;
                 self.xcrate_object_lifetime_defaults.entry(def_id).or_insert_with(|| {
-                    cstore.item_generics_cloned(def_id).types.into_iter().map(|def| {
+                    cstore.item_generics_cloned_untracked(def_id).types.into_iter().map(|def| {
                         def.object_lifetime_default
                     }).collect()
                 })
diff --git a/src/librustc_metadata/cstore_impl.rs b/src/librustc_metadata/cstore_impl.rs
index 90bccf92b19b..0a14eac31572 100644
--- a/src/librustc_metadata/cstore_impl.rs
+++ b/src/librustc_metadata/cstore_impl.rs
@@ -350,12 +350,12 @@ impl CrateStore for cstore::CStore {
         self.get_crate_data(def.krate).get_visibility(def.index)
     }
 
-    fn item_generics_cloned(&self, def: DefId) -> ty::Generics {
+    fn item_generics_cloned_untracked(&self, def: DefId) -> ty::Generics {
         self.read_dep_node(def);
         self.get_crate_data(def.krate).get_generics(def.index)
     }
 
-    fn associated_item_cloned(&self, def: DefId) -> ty::AssociatedItem
+    fn associated_item_cloned_untracked(&self, def: DefId) -> ty::AssociatedItem
     {
         self.read_dep_node(def);
         self.get_crate_data(def.krate).get_associated_item(def.index)
diff --git a/src/librustc_resolve/build_reduced_graph.rs b/src/librustc_resolve/build_reduced_graph.rs
index 776ec3fd3f99..e3589ad58cfa 100644
--- a/src/librustc_resolve/build_reduced_graph.rs
+++ b/src/librustc_resolve/build_reduced_graph.rs
@@ -490,7 +490,7 @@ impl<'a> Resolver<'a> {
                     self.define(module, child.ident, ns,
                                 (child.def, ty::Visibility::Public, DUMMY_SP, expansion));
 
-                    if self.session.cstore.associated_item_cloned(child.def.def_id())
+                    if self.session.cstore.associated_item_cloned_untracked(child.def.def_id())
                            .method_has_self_argument {
                         self.has_self.insert(child.def.def_id());
                     }