[DRE-maint] Bug#996345: ruby-packable: FTBFS with ruby3.0: ERROR: Test "ruby3.0" failed: ArgumentError: tried to create Proc object without a block

[Antonio Terceiro]

Source: ruby-packable
Version: 1.3.14-1
Severity: serious
Justification: FTBFS
Tags: bookworm sid ftbfs
User: debian-ruby at lists.debian.org
Usertags: ruby3.0

Hi,

We are about to enable building against ruby3.0 on unstable. During a test
rebuild, ruby-packable was found to fail to build in that situation.

To reproduce this locally, you need to install ruby-all-dev from experimental
on an unstable system or build chroot.

Relevant part (hopefully):
> ArgumentError: tried to create Proc object without a block
>     /<<PKGBUILDDIR>>/debian/ruby-packable/usr/share/rubygems-integration/all/gems/packable-1.3.14/lib/packable/extensions/io.rb:76:in `initialize'
>     /<<PKGBUILDDIR>>/debian/ruby-packable/usr/share/rubygems-integration/all/gems/packable-1.3.14/lib/packable/extensions/io.rb:76:in `new'
>     /<<PKGBUILDDIR>>/debian/ruby-packable/usr/share/rubygems-integration/all/gems/packable-1.3.14/lib/packable/extensions/io.rb:76:in `each_with_packing'
>     /<<PKGBUILDDIR>>/test/packing_doc_test.rb:22:in `test_doc'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:98:in `block (3 levels) in run'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:195:in `capture_exceptions'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:95:in `block (2 levels) in run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:270:in `time_it'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:94:in `block in run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:365:in `on_signal'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:211:in `with_info_handler'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:93:in `run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:1029:in `run_one_method'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:339:in `run_one_method'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:326:in `block (2 levels) in run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:325:in `each'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:325:in `block in run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:365:in `on_signal'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:352:in `with_info_handler'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:324:in `run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:164:in `block in __run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:164:in `map'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:164:in `__run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:141:in `run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:68:in `block in autorun'
> 
> 17 runs, 46 assertions, 0 failures, 1 errors, 0 skips
> ERROR: Test "ruby3.0" failed: 


The full build log is available at
https://people.debian.org/~kanashiro/ruby3.0/round2/builds/3/ruby-packable/ruby-packable_1.3.14-1+rebuild1633390366_amd64.build.txt
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