Implement InspectLoader for BuiltinImporter.
diff --git a/Lib/importlib/abc.py b/Lib/importlib/abc.py
index 6b00569..c9c542a 100644
--- a/Lib/importlib/abc.py
+++ b/Lib/importlib/abc.py
@@ -14,7 +14,6 @@
         """Abstract method which when implemented should load a module."""
         raise NotImplementedError
 
-Loader.register(machinery.BuiltinImporter)
 Loader.register(machinery.FrozenImporter)
 
 
@@ -75,6 +74,8 @@
         module."""
         return NotImplementedError
 
+InspectLoader.register(machinery.BuiltinImporter)
+
 
 class PyLoader(_bootstrap.PyLoader, InspectLoader):