diff --git a/example/mini_core.rs b/example/mini_core.rs
index 40ce0bf30d..08adec96a0 100644
--- a/example/mini_core.rs
+++ b/example/mini_core.rs
@@ -6,6 +6,7 @@
     extern_types,
     decl_macro,
     rustc_attrs,
+    rustc_private,
     transparent_unions,
     pattern_types,
     auto_traits,
diff --git a/josh-sync.toml b/josh-sync.toml
new file mode 100644
index 0000000000..6cb68ee62b
--- /dev/null
+++ b/josh-sync.toml
@@ -0,0 +1,3 @@
+repo = "rustc_codegen_cranelift"
+filter = ":rev(f2ef4150da1c50e5b04607cdab771530cac4ffe4:prefix=compiler/rustc_codegen_cranelift):/compiler/rustc_codegen_cranelift"
+sync-version = 2
diff --git a/rust-version b/rust-version
new file mode 100644
index 0000000000..9f185886b8
--- /dev/null
+++ b/rust-version
@@ -0,0 +1 @@
+c397dae808f70caebab1fc4e11b3edf7e59f58c7