Make recipes.py run give better messages.

recipes.py

Index: recipes.py
diff --git a/recipes.py b/recipes.py
index 1c2e48cf0e44720dfff3ce4c154a6c698300db2b..2ce0e7064a9c254b94cd6e6b6395681b0fa02c27 100755
--- a/recipes.py
+++ b/recipes.py
@@ -10,6 +10,7 @@ infra/config/recipes.cfg.
 """
 
 import argparse
+import ast
 import json
 import logging
 import os
@@ -119,7 +120,7 @@ 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)
 
@@ -143,7 +144,7 @@ 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)