From c66149b0d3a4928539773ebc7e2b7a9baaa6591e Mon Sep 17 00:00:00 2001
From: Devesh Kumar Singh <deveshkusingh@gmail.com>
Date: Sun, 19 Apr 2020 15:03:53 +0530
Subject: [PATCH] Warn if package index gets unexpected Content-Type

---
 news/6754.feature                    | 1 +
 src/pip/_internal/index/collector.py | 5 +++--
 2 files changed, 4 insertions(+), 2 deletions(-)
 create mode 100644 news/6754.feature

diff --git a/news/6754.feature b/news/6754.feature
new file mode 100644
index 00000000000..561643dbd28
--- /dev/null
+++ b/news/6754.feature
@@ -0,0 +1 @@
+Warn if index pages have unexpected content-type
diff --git a/src/pip/_internal/index/collector.py b/src/pip/_internal/index/collector.py
index e2c800c2cde..321861e2c76 100644
--- a/src/pip/_internal/index/collector.py
+++ b/src/pip/_internal/index/collector.py
@@ -455,8 +455,9 @@ def _get_html_page(link, session=None):
             'be checked by HEAD.', link,
         )
     except _NotHTML as exc:
-        logger.debug(
-            'Skipping page %s because the %s request got Content-Type: %s',
+        logger.warning(
+            'Skipping page %s because the %s request got Content-Type: %s.'
+            'The supported Content-Type is text/html',
             link, exc.request_desc, exc.content_type,
         )
     except HTTPError as exc: