From c37ab5f34b6bd1939a4121be684a56ae755dcdd4 Mon Sep 17 00:00:00 2001
From: Lingxian Kong <anlin.kong@gmail.com>
Date: Tue, 28 May 2019 09:14:10 +1200
Subject: [PATCH] docs: fix build failure on html_last_updated_fmt

Error message in CI job build-openstack-api-ref:
The config value `html_last_updated_fmt' has type `bytes'; expected
`str'.

Change-Id: Ie760abeb4a3ea8666da25480a8461812a67514eb
---
 api-ref/source/conf.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/api-ref/source/conf.py b/api-ref/source/conf.py
index 8c109bb960..11ae6892a9 100755
--- a/api-ref/source/conf.py
+++ b/api-ref/source/conf.py
@@ -172,8 +172,7 @@ html_context = {'bug_tag': 'api-ref',
 git_cmd = ["git", "log", "--pretty=format:'%ad, commit %h'", "--date=local",
            "-n1"]
 try:
-    html_last_updated_fmt = subprocess.Popen(
-        git_cmd, stdout=subprocess.PIPE).communicate()[0]
+    html_last_updated_fmt = subprocess.check_output(git_cmd).decode('utf-8')
 except Exception:
     warnings.warn('Cannot get last updated time from git repository. '
                   'Not setting "html_last_updated_fmt".')