[DRE-maint] Bug#979432: ruby-rack FTBFS on IPV6-only buildds

[Adrian Bunk]

Source: ruby-rack
Version: 2.1.1-5
Severity: serious
Tags: ftbfs

https://buildd.debian.org/status/logs.php?pkg=ruby-rack&arch=all

...
┌──────────────────────────────────────────────────────────────────────────────┐
│ Run tests for ruby2.7 from debian/ruby-tests.rake                            │
└──────────────────────────────────────────────────────────────────────────────┘

RUBYLIB=/<<PKGBUILDDIR>>/debian/ruby-rack/usr/lib/ruby/vendor_ruby:. GEM_PATH=/<<PKGBUILDDIR>>/debian/ruby-rack/usr/share/rubygems-integration/all:/var/lib/gems/2.7.0:/usr/local/lib/ruby/gems/2.7.0:/usr/lib/ruby/gems/2.7.0:/usr/lib/x86_64-linux-gnu/ruby/gems/2.7.0:/usr/share/rubygems-integration/2.7.0:/usr/share/rubygems-integration/all:/usr/lib/x86_64-linux-gnu/rubygems-integration/2.7.0 ruby2.7 -S rake -f debian/ruby-tests.rake
/usr/bin/ruby2.7 -I"lib:test"  "/usr/share/rubygems-integration/all/gems/rake-13.0.1/lib/rake/rake_test_loader.rb" "test/spec_auth_basic.rb" "test/spec_auth_digest.rb" "test/spec_body_proxy.rb" "test/spec_builder.rb" "test/spec_cascade.rb" "test/spec_chunked.rb" "test/spec_common_logger.rb" "test/spec_conditional_get.rb" "test/spec_config.rb" "test/spec_content_length.rb" "test/spec_content_type.rb" "test/spec_deflater.rb" "test/spec_directory.rb" "test/spec_etag.rb" "test/spec_events.rb" "test/spec_files.rb" "test/spec_handler.rb" "test/spec_head.rb" "test/spec_lint.rb" "test/spec_lobster.rb" "test/spec_lock.rb" "test/spec_logger.rb" "test/spec_media_type.rb" "test/spec_method_override.rb" "test/spec_mime.rb" "test/spec_mock.rb" "test/spec_multipart.rb" "test/spec_null_logger.rb" "test/spec_recursive.rb" "test/spec_request.rb" "test/spec_response.rb" "test/spec_rewindable_input.rb" "test/spec_runtime.rb" "test/spec_sendfile.rb" "test/spec_server.rb" "test/spec_session_abstract_id.rb" "test/spec_session_abstract_session_hash.rb" "test/spec_session_cookie.rb" "test/spec_session_pool.rb" "test/spec_show_exceptions.rb" "test/spec_show_status.rb" "test/spec_static.rb" "test/spec_tempfile_reaper.rb" "test/spec_thin.rb" "test/spec_urlmap.rb" "test/spec_utils.rb" "test/spec_version.rb" "test/spec_webrick.rb" "test/gemloader.rb" 
Cannot load minitest-sprint >= 0
Run options: --seed 3819

# Running:

....................................................................................................S.................S..............................................................................................................................................................................................S....................................................................................................................................................................................................................................................................................................................................................................................................................#<Thread:0x000055ec3be9a188 /<<PKGBUILDDIR>>/test/spec_thin.rb:17 run> terminated with exception (report_on_exception is true):
/usr/lib/ruby/vendor_ruby/eventmachine.rb:532:in `start_tcp_server': no acceptor (port is in use or requires root privileges) (RuntimeError)
	from /usr/lib/ruby/vendor_ruby/eventmachine.rb:532:in `start_server'
	from /usr/lib/ruby/vendor_ruby/thin/backends/tcp_server.rb:16:in `connect'
	from /usr/lib/ruby/vendor_ruby/thin/backends/base.rb:63:in `block in start'
	from /usr/lib/ruby/vendor_ruby/eventmachine.rb:196:in `run_machine'
	from /usr/lib/ruby/vendor_ruby/eventmachine.rb:196:in `run'
	from /usr/lib/ruby/vendor_ruby/thin/backends/base.rb:73:in `start'
	from /usr/lib/ruby/vendor_ruby/thin/server.rb:162:in `start'
	from /<<PKGBUILDDIR>>/lib/rack/handler/thin.rb:24:in `run'
	from /<<PKGBUILDDIR>>/test/spec_thin.rb:18:in `block (3 levels) in <top (required)>'
E#<Thread:0x000055ec3be838e8 /<<PKGBUILDDIR>>/test/spec_thin.rb:17 run> terminated with exception (report_on_exception is true):
...
1040 runs, 3730 assertions, 0 failures, 8 errors, 3 skips

You have skipped tests. Run with --verbose for details.
rake aborted!
Command failed with status (1): [ruby -I"lib:test"  "/usr/share/rubygems-integration/all/gems/rake-13.0.1/lib/rake/rake_test_loader.rb" "test/spec_auth_basic.rb" "test/spec_auth_digest.rb" "test/spec_body_proxy.rb" "test/spec_builder.rb" "test/spec_cascade.rb" "test/spec_chunked.rb" "test/spec_common_logger.rb" "test/spec_conditional_get.rb" "test/spec_config.rb" "test/spec_content_length.rb" "test/spec_content_type.rb" "test/spec_deflater.rb" "test/spec_directory.rb" "test/spec_etag.rb" "test/spec_events.rb" "test/spec_files.rb" "test/spec_handler.rb" "test/spec_head.rb" "test/spec_lint.rb" "test/spec_lobster.rb" "test/spec_lock.rb" "test/spec_logger.rb" "test/spec_media_type.rb" "test/spec_method_override.rb" "test/spec_mime.rb" "test/spec_mock.rb" "test/spec_multipart.rb" "test/spec_null_logger.rb" "test/spec_recursive.rb" "test/spec_request.rb" "test/spec_response.rb" "test/spec_rewindable_input.rb" "test/spec_runtime.rb" "test/spec_sendfile.rb" "test/spec_server.rb" "test/spec_session_abstract_id.rb" "test/spec_session_abstract_session_hash.rb" "test/spec_session_cookie.rb" "test/spec_session_pool.rb" "test/spec_show_exceptions.rb" "test/spec_show_status.rb" "test/spec_static.rb" "test/spec_tempfile_reaper.rb" "test/spec_thin.rb" "test/spec_urlmap.rb" "test/spec_utils.rb" "test/spec_version.rb" "test/spec_webrick.rb" "test/gemloader.rb" ]
/usr/share/rubygems-integration/all/gems/rake-13.0.1/exe/rake:27:in `<top (required)>'
Tasks: TOP => default => test
(See full trace by running task with --trace)
ERROR: Test "ruby2.7" failed. Exiting.
dh_auto_install: error: dh_ruby --install /<<PKGBUILDDIR>>/debian/ruby-rack returned exit code 1
make: *** [debian/rules:6: binary-indep] Error 25