[DRE-maint] Bug#1115693: ruby-mechanize: FTBFS: ERROR: Test "ruby3.3" failed: NoMethodError: undefined method `[]' for nil

[Lucas Nussbaum]

Source: ruby-mechanize
Version: 2.10.1-1
Severity: serious
Justification: FTBFS
Tags: forky sid ftbfs
User: lucas at debian.org
Usertags: ftbfs-20250918 ftbfs-forky

Hi,

During a rebuild of all packages in sid, your package failed to build
on amd64.

The full build log is available from:
http://qa-logs.debian.net/2025/09/18/ruby-mechanize_2.10.1-1_unstable.log

All bugs filed during this archive rebuild are listed at:
https://bugs.debian.org/cgi-bin/pkgreport.cgi?tag=ftbfs-20250918;users=lucas@debian.org
or:
https://udd.debian.org/bugs/?release=na&merged=ign&fnewerval=7&flastmodval=7&fusertag=only&fusertagtag=ftbfs-20250918&fusertaguser=lucas@debian.org&allbugs=1&cseverity=1&ctags=1&caffected=1#results

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

If you reassign this bug to another package, please mark it as 'affects'-ing
this package. See https://www.debian.org/Bugs/server-control#affects

If you fail to reproduce this, please provide a build log and diff it with mine
so that we can identify if something relevant changed in the meantime.

-- 
Relevant part of the build log (hopefully):
> NoMethodError: undefined method `[]' for nil
>     debian/ruby-mechanize/usr/share/rubygems-integration/all/gems/mechanize-2.10.1/lib/mechanize.rb:391:in `click'
>     test/test_mechanize.rb:92:in `test_click'
> 
> 733 runs, 2533 assertions, 0 failures, 6 errors, 2 skips
> rake aborted!
> Command failed with status (1): [ruby -w -I"test" /usr/share/rubygems-integration/all/gems/rake-13.2.1/lib/rake/rake_test_loader.rb "test/test_mechanize.rb" "test/test_mechanize_cookie.rb" "test/test_mechanize_cookie_jar.rb" "test/test_mechanize_directory_saver.rb" "test/test_mechanize_download.rb" "test/test_mechanize_element_not_found_error.rb" "test/test_mechanize_file.rb" "test/test_mechanize_file_connection.rb" "test/test_mechanize_file_request.rb" "test/test_mechanize_file_response.rb" "test/test_mechanize_file_saver.rb" "test/test_mechanize_form.rb" "test/test_mechanize_form_check_box.rb" "test/test_mechanize_form_encoding.rb" "test/test_mechanize_form_field.rb" "test/test_mechanize_form_file_upload.rb" "test/test_mechanize_form_image_button.rb" "test/test_mechanize_form_keygen.rb" "test/test_mechanize_form_multi_select_list.rb" "test/test_mechanize_form_option.rb" "test/test_mechanize_form_radio_button.rb" "test/test_mechanize_form_select_list.rb" "test/test_mechanize_form_textarea.rb" "test/test_mechanize_headers.rb" "test/test_mechanize_history.rb" "test/test_mechanize_http_agent.rb" "test/test_mechanize_http_auth_challenge.rb" "test/test_mechanize_http_auth_realm.rb" "test/test_mechanize_http_auth_store.rb" "test/test_mechanize_http_content_disposition_parser.rb" "test/test_mechanize_http_www_authenticate_parser.rb" "test/test_mechanize_image.rb" "test/test_mechanize_link.rb" "test/test_mechanize_page.rb" "test/test_mechanize_page_encoding.rb" "test/test_mechanize_page_frame.rb" "test/test_mechanize_page_image.rb" "test/test_mechanize_page_link.rb" "test/test_mechanize_page_meta_refresh.rb" "test/test_mechanize_parser.rb" "test/test_mechanize_pluggable_parser.rb" "test/test_mechanize_redirect_limit_reached_error.rb" "test/test_mechanize_redirect_not_get_or_head_error.rb" "test/test_mechanize_response_read_error.rb" "test/test_mechanize_subclass.rb" "test/test_mechanize_util.rb" "test/test_mechanize_xml_file.rb" "test/test_multi_select.rb"  -v]
> /usr/share/rubygems-integration/all/gems/rake-13.2.1/exe/rake:27:in `<top (required)>'
> Tasks: TOP => default
> (See full trace by running task with --trace)
> ERROR: Test "ruby3.3" failed: