1 files changed, 3 insertions, 3 deletions
diff --git a/test/backtest.py b/test/backtest.py
index e8d8366d..b17aa242 100644
--- a/test/backtest.py
+++ b/test/backtest.py
@@ -1,6 +1,6 @@
 """Add things to old Pythons so I can pretend they are newer, for tests."""
 
-# pylint: disable-msg=W0622
+# pylint: disable=W0622
 # (Redefining built-in blah)
 # The whole point of this file is to redefine built-ins, so shut up about it.
 
@@ -30,10 +30,10 @@ else:
                 stdin=subprocess.PIPE, stdout=subprocess.PIPE,
                 stderr=subprocess.STDOUT
                 )
-        status = proc.wait()
+        output, _ = proc.communicate()
+        status = proc.returncode        # pylint: disable=E1101
 
         # Get the output, and canonicalize it to strings with newlines.
-        output = proc.stdout.read()
         if not isinstance(output, str):
             output = output.decode('utf-8')
         output = output.replace('\r', '')