[extractor/common] Fix crash in _report_ignoring_subs

youtube_dl/extractor/common.py

@@ -1812,10 +1812,10 @@ def _m3u8_meta_format(self, m3u8_url, ext=None, preference=None, m3u8_id=None):
         }
 
     def _report_ignoring_subs(self, name):
-        self.report_warning(bug_reports_message(
+        self.report_warning(
             'Ignoring subtitle tracks found in the {0} manifest; '
-            'if any subtitle tracks are missing,'.format(name)
-        ), only_once=True)
+            'if any subtitle tracks are missing, {1}'.format(name, bug_reports_message()),
+            only_once=True)
 
     def _extract_m3u8_formats(self, m3u8_url, video_id, ext=None,
                               entry_protocol='m3u8', preference=None,

youtube_dl/utils.py

@@ -2371,15 +2371,12 @@ def set_alpn_protocols(ctx):
         return YoutubeDLHTTPSHandler(params, context=context, **kwargs)
 
 
-def bug_reports_message():
+def bug_reports_message(before=';'):
     if ytdl_is_updateable():
         update_cmd = 'type  youtube-dl -U  to update'
     else:
         update_cmd = 'see  https://yt-dl.org/update  on how to update'
-    msg = '; please report this issue on https://yt-dl.org/bug .'
-    msg += ' Make sure you are using the latest version; %s.' % update_cmd
-    msg += ' Be sure to call youtube-dl with the --verbose flag and include its complete output.'
-    return msg
+    return '; please report this issue on https://yt-dl.org/bug .'
 
 
 class YoutubeDLError(Exception):