From 4131d3f300196da059f5abe6d36f4870459692ad Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Sat, 17 Feb 2018 12:13:33 -0500
Subject: [PATCH] Probably it's best to write the err stream to stderr.

---
 _pytest/doctest.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/_pytest/doctest.py b/_pytest/doctest.py
index d61efebe7..f54f833ec 100644
--- a/_pytest/doctest.py
+++ b/_pytest/doctest.py
@@ -118,7 +118,7 @@ class DoctestItem(pytest.Item):
         if capman:
             out, err = capman.suspend_global_capture(in_=True)
             sys.stdout.write(out)
-            sys.stdout.write(err)
+            sys.stderr.write(err)
 
     def repr_failure(self, excinfo):
         import doctest