Possible bug with GitHub Issues label-based link HTML status findings from Linkchecker

[d33bs]

Summary

Thanks for the work on Linkchecker, it's a great tool! I noticed a possible bug with GitHub Issues label-based links and the HTML status returned by Linkchecker vs what I see from curl. I recognize this could be more complex; that there might be some redirection or other things happening that cause the URL to show this way. Just the same, I'm also interested in how to avoid flagging this seemingly "false negative" if there's an elegant way to configure Linkchecker for these types of links.

I initially experienced this challenge working on changes related to software-gardening/almanac#10 and used the .linkcheckerrc file to work around the issue through, for example:

[output]
ignoreerrors=
  ^https:\/\/github\.com\/linkchecker\/checker\/issues.* ^404

Steps to reproduce

GitHub provides the ability to filter the issues listing using labels. So far as I'm aware, any of these URL's created from filters will trigger similar results. For example: https://github.com/linkchecker/linkchecker/issues?q=is%3Aopen+is%3Aissue+label%3Abug

Please see the steps shown in this gist or Google Colab notebook.

Actual result

Linkchecker shows a status of 404 for these type of URL's.

Expected result

Using a browser or curl to check these URL's shows an HTML status of 200.

Environment

• Operating system: Linux, MacOS
• Linkchecker version: 10.4.0
• Python version: Python 3.10.x, 3.11.x
• Install method: PyPI

Configuration

This appears to happen with default / no additional configuration after installation.

Logs

DEBUG linkcheck.cmdline 2024-03-25 14:34:45,647 MainThread Python 3.10.12 (main, Nov 20 2023, 15:14:05) [GCC 11.4.0] on linux
DEBUG linkcheck.check 2024-03-25 14:34:45,647 MainThread reading configuration from ['/root/.config/linkchecker/linkcheckerrc']
WARNING linkcheck.check 2024-03-25 14:34:45,679 MainThread Running as root user; dropping privileges by changing user to nobody.
INFO linkcheck.cmdline 2024-03-25 14:34:45,679 MainThread Checking intern URLs only; use --check-extern to check extern URLs.
DEBUG linkcheck.cmdline 2024-03-25 14:34:45,681 MainThread configuration: [('aborttimeout', 300),
 ('allowedschemes', []),
 ('authentication', []),
 ('checkextern', False),
 ('cookiefile', None),
 ('csv', {}),
 ('debugmemory', False),
 ('dot', {}),
 ('enabledplugins', []),
 ('externlinks', []),
 ('failures', {}),
 ('fileoutput', []),
 ('gml', {}),
 ('gxml', {}),
 ('html', {}),
 ('ignoreerrors', []),
 ('ignorewarnings', []),
 ('internlinks', []),
 ('localwebroot', None),
 ('logger', 'TextLogger'),
 ('loginextrafields', {}),
 ('loginpasswordfield', 'password'),
 ('loginurl', None),
 ('loginuserfield', 'login'),
 ('maxfilesizedownload', 5242880),
 ('maxfilesizeparse', 1048576),
 ('maxhttpredirects', 10),
 ('maxnumurls', None),
 ('maxrequestspersecond', 10),
 ('maxrunseconds', None),
 ('none', {}),
 ('output', 'text'),
 ('pluginfolders', []),
 ('quiet', False),
 ('recursionlevel', -1),
 ('resultcachesize', 100000),
 ('robotstxt', True),
 ('sitemap', {}),
 ('sql', {}),
 ('sslverify', '/etc/ssl/certs/ca-certificates.crt'),
 ('status', True),
 ('status_wait_seconds', 5),
 ('text', {}),
 ('threads', 10),
 ('timeout', 60),
 ('trace', False),
 ('useragent',
  'Mozilla/5.0 (compatible; LinkChecker/10.4.0; '
  '+https://linkchecker.github.io/linkchecker/)'),
 ('verbose', False),
 ('warnings', True),
 ('xml', {})]
DEBUG linkcheck.check 2024-03-25 14:34:45,682 MainThread HttpUrl handles url https://github.com/linkchecker/linkchecker/issues?q=is%3Aopen+is%3Aissue+label%3Abug
DEBUG linkcheck.check 2024-03-25 14:34:45,682 MainThread checking syntax
DEBUG linkcheck.check 2024-03-25 14:34:45,683 MainThread cache_url 'https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug'
DEBUG linkcheck.check 2024-03-25 14:34:45,683 MainThread Add intern pattern '^https?://(www\\.|)github\\.com/linkchecker/linkchecker'
DEBUG linkcheck.check 2024-03-25 14:34:45,683 MainThread Link pattern '^https?://(www\\.|)github\\.com/linkchecker/linkchecker' strict=False
DEBUG linkcheck.cache 2024-03-25 14:34:45,684 MainThread queueing https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug
LinkChecker 10.4.0
Copyright (C) 2000-2016 Bastian Kleineidam, 2010-2023 LinkChecker Authors
LinkChecker comes with ABSOLUTELY NO WARRANTY!
This is free software, and you are welcome to redistribute it under
certain conditions. Look at the file `COPYING' within this distribution.
Read the documentation at https://linkchecker.github.io/linkchecker/
Write comments and bugs to https://github.com/linkchecker/linkchecker/issues

Start checking at 2024-03-25 14:34:45+000
DEBUG linkcheck.check 2024-03-25 14:34:45,691 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug Checking https link
base_url='https://github.com/linkchecker/linkchecker/issues?q=is%3Aopen+is%3Aissue+label%3Abug'
parent_url=None
base_ref=None
recursion_level=0
url_connection=None
line=None
column=None
page=0
name=''
anchor=''
cache_url=https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug
DEBUG linkcheck.check 2024-03-25 14:34:45,692 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug checking connection
DEBUG linkcheck.check 2024-03-25 14:34:45,995 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug Robots response headers: {'Server': 'GitHub.com', 'Date': 'Mon, 25 Mar 2024 14:34:45 GMT', 'Content-Type': 'text/plain', 'Last-Modified': 'Mon, 25 Mar 2024 14:17:44 GMT', 'ETag': 'W/"66018788-603"', 'Vary': 'Accept-Encoding, Accept, X-Requested-With', 'X-Frame-Options': 'DENY', 'Content-Encoding': 'gzip', 'Set-Cookie': '_gh_sess=JPhBCKtiHsBnbUeXhtsSf6%2B8RUDUovD5N2Hy2%2FGSO%2FLEP0StmwT52a7XwFwuOyiH9HrmSM8fz1uq0lq4gup%2BnndNqwmUr2MaUkqJhcav%2BnYcSMbtZ7N8Uvl0FqegC22UR5KHkGte2WeCixKVRUyg%2F%2F93pEtNSxlnjgnzQIEyLj6djHX1gQYXsrLMMTqNnNLmHzEoi6m1MSfq6%2BcKp6ULlaS%2BDS1moyJRm0a580DkFnJT%2BbAgXFuIMo%2F2j2S3nvCq1QJO6zbBC8Btx9%2FlHGHLyw%3D%3D--AwM9KDQlsOcweND%2B--nlOXJTLhl0qJP8GbuFpa%2Bw%3D%3D; Path=/; HttpOnly; Secure; SameSite=Lax, _octo=GH1.1.114600357.1711377285; Path=/; Domain=github.com; Expires=Tue, 25 Mar 2025 14:34:45 GMT; Secure; SameSite=Lax, logged_in=no; Path=/; Domain=github.com; Expires=Tue, 25 Mar 2025 14:34:45 GMT; HttpOnly; Secure; SameSite=Lax', 'Accept-Ranges': 'bytes', 'Content-Length': '558', 'X-GitHub-Request-Id': 'EA80:96DE4:18666:239DB:66018B85'}
DEBUG linkcheck.check 2024-03-25 14:34:45,995 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' parse lines
DEBUG linkcheck.check 2024-03-25 14:34:45,995 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 8: allow or disallow directives without any user-agent line
DEBUG linkcheck.check 2024-03-25 14:34:45,995 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 9: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,995 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 10: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,995 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 11: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,996 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 12: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,996 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 13: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,996 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 14: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,996 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 15: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,996 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 16: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,996 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 17: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,996 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 18: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,996 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 19: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,996 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 20: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,996 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 21: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,996 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 22: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,996 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 24: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,996 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 25: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,997 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 26: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,997 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 27: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,997 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 28: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,997 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 29: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,997 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 30: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,997 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 31: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,997 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 32: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,997 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 33: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,997 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 34: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,997 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 35: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,997 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 36: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,997 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 37: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,997 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 38: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,997 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 39: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,998 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 40: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,998 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 41: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,998 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 42: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,998 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 44: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,998 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 45: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,998 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 46: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,998 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 47: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,998 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 49: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,998 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 50: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,999 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 51: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,999 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 52: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,999 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 53: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,999 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 54: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,999 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 55: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,999 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 56: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,999 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 57: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,999 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 58: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,999 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 59: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:45,999 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 60: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:46,000 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 61: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:46,000 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 62: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:46,000 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 63: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:46,000 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 64: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:46,000 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 65: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:46,000 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 66: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:46,000 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 68: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:46,000 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' line 69: missing user-agent directive before this line
DEBUG linkcheck.check 2024-03-25 14:34:46,000 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug Parsed rules:
User-agent: baidu
Crawl-delay: 1
DEBUG linkcheck.check 2024-03-25 14:34:46,000 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug 'https://github.com/robots.txt' check allowance for:
  user agent: 'Mozilla/5.0 (compatible; LinkChecker/10.4.0; +https://linkchecker.github.io/linkchecker/)'
  url: 'https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug' ...
DEBUG linkcheck.check 2024-03-25 14:34:46,001 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug  ... agent not found, allow.
DEBUG linkcheck.check 2024-03-25 14:34:46,001 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug Prepare request with {'method': 'GET', 'url': 'https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug', 'headers': {}}
DEBUG linkcheck.check 2024-03-25 14:34:46,002 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug Min wait time: 0.1 Max wait time: 0.6000000000000001 for host: github.com
DEBUG linkcheck.check 2024-03-25 14:34:46,002 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug Send request <PreparedRequest [GET]> with {'stream': True, 'timeout': 60, 'verify': '/etc/ssl/certs/ca-certificates.crt', 'allow_redirects': False}
DEBUG linkcheck.check 2024-03-25 14:34:46,002 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug Request headers {'User-Agent': 'Mozilla/5.0 (compatible; LinkChecker/10.4.0; +https://linkchecker.github.io/linkchecker/)', 'Accept-Encoding': 'gzip, deflate', 'Accept': '*/*', 'Connection': 'keep-alive', 'Cookie': '_octo=GH1.1.114600357.1711377285; logged_in=no; _gh_sess=JPhBCKtiHsBnbUeXhtsSf6%2B8RUDUovD5N2Hy2%2FGSO%2FLEP0StmwT52a7XwFwuOyiH9HrmSM8fz1uq0lq4gup%2BnndNqwmUr2MaUkqJhcav%2BnYcSMbtZ7N8Uvl0FqegC22UR5KHkGte2WeCixKVRUyg%2F%2F93pEtNSxlnjgnzQIEyLj6djHX1gQYXsrLMMTqNnNLmHzEoi6m1MSfq6%2BcKp6ULlaS%2BDS1moyJRm0a580DkFnJT%2BbAgXFuIMo%2F2j2S3nvCq1QJO6zbBC8Btx9%2FlHGHLyw%3D%3D--AwM9KDQlsOcweND%2B--nlOXJTLhl0qJP8GbuFpa%2Bw%3D%3D'}
DEBUG linkcheck.check 2024-03-25 14:34:46,178 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug Response headers {'Server': 'GitHub.com', 'Date': 'Mon, 25 Mar 2024 14:34:46 GMT', 'Content-Type': 'text/plain; charset=utf-8', 'Vary': 'X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, Accept-Encoding, Accept, X-Requested-With', 'Cache-Control': 'no-cache', 'Strict-Transport-Security': 'max-age=31536000; includeSubdomains; preload', 'X-Frame-Options': 'deny', 'X-Content-Type-Options': 'nosniff', 'X-XSS-Protection': '0', 'Referrer-Policy': 'no-referrer-when-downgrade', 'Content-Security-Policy': "default-src 'none'; base-uri 'self'; connect-src 'self'; form-action 'self'; img-src 'self' data:; script-src 'self'; style-src 'unsafe-inline'", 'Content-Encoding': 'gzip', 'Content-Length': '40', 'X-GitHub-Request-Id': 'EA80:96DE4:1868A:23A2F:66018B85'}
DEBUG linkcheck.check 2024-03-25 14:34:46,179 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug Response encoding utf-8
DEBUG linkcheck.check 2024-03-25 14:34:46,179 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug Got SSL certificate {'subject': ((('commonName', 'github.com'),),), 'issuer': ((('countryName', 'GB'),), (('stateOrProvinceName', 'Greater Manchester'),), (('localityName', 'Salford'),), (('organizationName', 'Sectigo Limited'),), (('commonName', 'Sectigo ECC Domain Validation Secure Server CA'),)), 'version': 3, 'serialNumber': '4E28F786B66C1A3B942CD2C40EB742A5', 'notBefore': 'Mar  7 00:00:00 2024 GMT', 'notAfter': 'Mar  7 23:59:59 2025 GMT', 'subjectAltName': (('DNS', 'github.com'), ('DNS', '[www.github.com](http://www.github.com/)')), 'OCSP': ('http://ocsp.sectigo.com/',), 'caIssuers': ('http://crt.sectigo.com/SectigoECCDomainValidationSecureServerCA.crt',)}
DEBUG linkcheck.check 2024-03-25 14:34:46,179 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug MIME type: text/plain
DEBUG linkcheck.check 2024-03-25 14:34:46,179 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug follow all redirections
DEBUG linkcheck.check 2024-03-25 14:34:46,179 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug MIME type: text/plain

URL        `https://github.com/linkchecker/linkchecker/issues?q=is%3Aopen+is%3Aissue+label%3Abug'
Real URL   https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug
Check time 0.489 seconds
Size       40B
Result     Error: 404 Not Found
DEBUG linkcheck.cache 2024-03-25 14:34:46,184 CheckThread-https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug task_done https://github.com/linkchecker/linkchecker/issues?q=is:open%20is:issue%20label:bug

Statistics:
Downloaded: 0B.
Content types: 0 image, 1 text, 0 video, 0 audio, 0 application, 0 mail and 0 other.
URL lengths: min=82, max=82, avg=82.

That's it. 1 link in 1 URL checked. 0 warnings found. 1 error found.
Stopped checking at 2024-03-25 14:34:47+000 (1 seconds)