Parameters to significantly_different.py need to be parsed as lists.

scripts/slave/recipe_modules/auto_bisect/resources/significantly_different.py

 """Launches an anaconda environment to run some scipy hypothesis tests."""
 
 import json
 import os
 import subprocess
 import sys
 
 class ScipyNotInstalledError(Exception):
   pass
 
 def main(argv, anaconda_path=None):
   _, list_a, list_b, significance  = argv
 
   # Do not even test if there's a single repeated value on both samples.
-  if len(set(list_a + list_b)) == 1:
+  if len(set(json.loads(list_a) + json.loads(list_b))) == 1:
     return {
-        'first_sample': list_a,
-        'second_sample': list_b,
+        'first_sample': json.loads(list_a),
+        'second_sample': json.loads(list_b),
         'mann_p_value': None,
         'anderson_p_value': None,
         'welch_p_value': None,
         'normal-y': None,
         'significantly_different': False
     }
 
   if not anaconda_path:
     if os.name == 'nt':
       anaconda_path = r'c:\conda-py-scientific\python.exe'
@@ skipping 11 matching lines @@
   return json.loads(subprocess.check_output(
       [anaconda_path, inner_script_location,list_a, list_b, significance],
       env=conda_environ))
 
 if __name__ == '__main__':
   result = main(sys.argv)
   if result:
     print json.dumps(result, indent=4)
     sys.exit(0)
   sys.exit(1)