diff --git a/rhodecode/tests/utils.py b/rhodecode/tests/utils.py
--- a/rhodecode/tests/utils.py
+++ b/rhodecode/tests/utils.py
@@ -18,6 +18,7 @@
 
 import threading
 import time
+import sys
 import logging
 import os.path
 import subprocess
@@ -31,7 +32,7 @@ from urllib.parse import unquote_plus
 import webob
 
 from webtest.app import TestResponse, TestApp
-from webtest.compat import print_stderr
+
 
 import pytest
 
@@ -51,6 +52,10 @@ from rhodecode.tests import login_user_s
 log = logging.getLogger(__name__)
 
 
+def print_to_func(value, print_to=sys.stderr):
+    print(value, file=print_to)
+
+
 class CustomTestResponse(TestResponse):
 
     def _save_output(self, out):
@@ -60,7 +65,7 @@ class CustomTestResponse(TestResponse):
 
     def mustcontain(self, *strings, **kw):
         """
-        Assert that the response contains all of the strings passed
+        Assert that the response contains all the strings passed
         in as arguments.
 
         Equivalent to::
@@ -68,6 +73,8 @@ class CustomTestResponse(TestResponse):
             assert string in res
         """
         print_body = kw.pop('print_body', False)
+        print_to = kw.pop('print_to', sys.stderr)
+
         if 'no' in kw:
             no = kw['no']
             del kw['no']
@@ -82,18 +89,18 @@ class CustomTestResponse(TestResponse):
 
         for s in strings:
             if s not in self:
-                print_stderr(f"Actual response (no {s!r}):")
-                print_stderr(f"body output saved as `{f}`")
+                print_to_func(f"Actual response (no {s!r}):", print_to=print_to)
+                print_to_func(f"body output saved as `{f}`", print_to=print_to)
                 if print_body:
-                    print_stderr(str(self))
+                    print_to_func(str(self), print_to=print_to)
                 raise IndexError(f"Body does not contain string {s!r}, body output saved as {f}")
 
         for no_s in no:
             if no_s in self:
-                print_stderr(f"Actual response (has {no_s!r})")
-                print_stderr(f"body output saved as `{f}`")
+                print_to_func(f"Actual response (has {no_s!r})", print_to=print_to)
+                print_to_func(f"body output saved as `{f}`", print_to=print_to)
                 if print_body:
-                    print_stderr(str(self))
+                    print_to_func(str(self), print_to=print_to)
                 raise IndexError(f"Body contains bad string {no_s!r}, body output saved as {f}")
 
     def assert_response(self):