[DRE-maint] Bug#996522: ruby-vips: FTBFS with ruby3.0: ERROR: Test "ruby3.0" failed: ArgumentError:

[Antonio Terceiro]

Source: ruby-vips
Version: 2.0.17-1
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-vips 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
>      # ./lib/vips/object.rb:269:in `new'
>      # ./lib/vips/object.rb:269:in `signal_connect'
>      # ./lib/vips/targetcustom.rb:60:in `on_write'
>      # ./spec/connection_spec.rb:155:in `block (2 levels) in <top (required)>'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/example.rb:257:in `instance_exec'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/example.rb:257:in `block in run'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/example.rb:503:in `block in with_around_and_singleton_context_hooks'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/example.rb:460:in `block in with_around_example_hooks'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/hooks.rb:481:in `block in run'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/hooks.rb:619:in `run_around_example_hooks_for'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/hooks.rb:481:in `run'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/example.rb:460:in `with_around_example_hooks'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/example.rb:503:in `with_around_and_singleton_context_hooks'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/example.rb:254:in `run'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/example_group.rb:644:in `block in run_examples'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/example_group.rb:640:in `map'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/example_group.rb:640:in `run_examples'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/example_group.rb:606:in `run'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/runner.rb:121:in `block (3 levels) in run_specs'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/runner.rb:121:in `map'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/runner.rb:121:in `block (2 levels) in run_specs'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/configuration.rb:2058:in `with_suite_hooks'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/runner.rb:116:in `block in run_specs'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/reporter.rb:74:in `report'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/runner.rb:115:in `run_specs'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/runner.rb:89:in `run'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/runner.rb:71:in `run'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib/rspec/core/runner.rb:45:in `invoke'
>      # /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/exe/rspec:4:in `<main>'
> 
> Finished in 0.88878 seconds (files took 0.23373 seconds to load)
> 91 examples, 3 failures
> 
> Failed examples:
> 
> rspec ./spec/connection_spec.rb:118 # Vips::SourceCustom can load a custom source
> rspec ./spec/connection_spec.rb:132 # Vips::SourceCustom on_seek is optional
> rspec ./spec/connection_spec.rb:151 # Vips::SourceCustom can write an image to a user output stream
> 
> /usr/bin/ruby3.0 -I/usr/share/rubygems-integration/all/gems/rspec-support-3.9.3/lib:/usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/lib /usr/share/rubygems-integration/all/gems/rspec-core-3.9.2/exe/rspec --pattern ./spec/\*\*/\*_spec.rb --backtrace -r ./spec/spec_helper.rb failed
> ERROR: Test "ruby3.0" failed: 


The full build log is available at
https://people.debian.org/~kanashiro/ruby3.0/round2/builds/3/ruby-vips/ruby-vips_2.0.17-1+rebuild1633398529_amd64.build.txt
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