Update to the latest changes of beat.core

beat/cmdline/experiments.py

@@ -165,9 +165,7 @@ def run_experiment(configuration, name, force, use_docker, use_local):
 
   if use_docker:
     # load existing environments
-    host = Host()
-    host.setup(raise_on_errors=False)
-    environments = host.environments
+    host = Host(raise_on_errors=False)
 
   # can we execute it?
   results = []
@@ -179,7 +177,7 @@ def run_experiment(configuration, name, force, use_docker, use_local):
     if use_docker:
       env = value['configuration']['environment']
       search_key = '%s (%s)' % (env['name'], env['version'])
-      if search_key not in environments:
+      if search_key not in host:
         logger.error("Cannot execute block `%s' on environment `%s': " \
                 "environment was not found' - please install it",
                 key, search_key)
@@ -221,7 +219,7 @@ def run_experiment(configuration, name, force, use_docker, use_local):
               reindent(result['user_error'], 4))
       logger.error("  Captured system error:\n%s",
               reindent(result['system_error'], 4))
-      print("  Environment: %s" % 'default environment')
+      logger.extra("  Environment: %s" % 'default environment')
       return 1
     elif use_docker:
       stats = result['statistics']