Make recipes.py run give better messages.

recipes.py

Index: recipes.py
diff --git a/recipes.py b/recipes.py
index d78d4abf9bb7d119c6bccdadce671b049b6d95a1..19ac90849eb0759a4c6acc72eb57fe1267065f89 100755
--- a/recipes.py
+++ b/recipes.py
@@ -102,6 +102,8 @@ def run(package_deps, args):
   def get_properties_from_file(filename):
     properties_file = sys.stdin if filename == '-' else open(filename)
     properties = json.load(properties_file)
+    if filename == '-':
+      properties_file.close()
     assert isinstance(properties, dict)
     return properties
 
@@ -125,7 +127,7 @@ def run(package_deps, args):
   os.environ['PYTHONIOENCODING'] = 'UTF-8'
 
   _, config_file = get_package_config(args)
-  universe = loader.UniverseView(
+  universe_view = loader.UniverseView(
       loader.RecipeUniverse(
           package_deps, config_file), package_deps.root_package)
 
@@ -145,7 +147,7 @@ def run(package_deps, args):
       ret = recipe_run.run_steps(
           properties, stream_engine,
           step_runner.SubprocessStepRunner(stream_engine),
-          universe=universe)
+          universe_view=universe_view)
     finally:
       os.chdir(old_cwd)