[DRE-maint] Bug#1019680: ruby-zeitwerk: FTBFS with ruby3.1: ERROR: Test "ruby3.1" failed: LoadError: cannot load such file -- /<<PKGBUILDDIR>>/test/tmp/foo.rb

[Antonio Terceiro]

Source: ruby-zeitwerk
Version: 2.4.2-2
Severity: important
Justification: FTBFS
Tags: bookworm sid ftbfs
User: debian-ruby at lists.debian.org
Usertags: ruby3.1

Hi,

We are about to start the ruby3.1 transition in unstable. While trying to
rebuild ruby-zeitwerk with ruby3.1 enabled, the build failed.

Relevant part of the build log (hopefully):
> LoadError: cannot load such file -- /<<PKGBUILDDIR>>/test/tmp/foo.rb
>     <internal:/usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb>:85:in `require'
>     <internal:/usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb>:85:in `require'
>     /<<PKGBUILDDIR>>/debian/ruby-zeitwerk/usr/share/rubygems-integration/all/gems/zeitwerk-2.4.2/lib/zeitwerk/kernel.rb:34:in `require'
>     /<<PKGBUILDDIR>>/test/tmp/foo/bar/baz/zoo/woo.rb:1:in `<top (required)>'
>     <internal:/usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb>:85:in `require'
>     <internal:/usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb>:85:in `require'
>     /<<PKGBUILDDIR>>/debian/ruby-zeitwerk/usr/share/rubygems-integration/all/gems/zeitwerk-2.4.2/lib/zeitwerk/kernel.rb:34:in `require'
>     /<<PKGBUILDDIR>>/test/lib/zeitwerk/test_require_interaction.rb:6:in `assert_required'
>     /<<PKGBUILDDIR>>/test/lib/zeitwerk/test_require_interaction.rb:97:in `block (2 levels) in <class:TestRequireInteraction>'
>     /<<PKGBUILDDIR>>/test/support/loader_test.rb:80:in `block (2 levels) in with_setup'
>     /<<PKGBUILDDIR>>/test/support/loader_test.rb:70:in `with_load_path'
>     /<<PKGBUILDDIR>>/test/support/loader_test.rb:80:in `block in with_setup'
>     /<<PKGBUILDDIR>>/test/support/loader_test.rb:61:in `block in with_files'
>     /<<PKGBUILDDIR>>/test/support/loader_test.rb:54:in `chdir'
>     /<<PKGBUILDDIR>>/test/support/loader_test.rb:54:in `with_files'
>     /<<PKGBUILDDIR>>/test/support/loader_test.rb:76:in `with_setup'
>     /<<PKGBUILDDIR>>/test/lib/zeitwerk/test_require_interaction.rb:96:in `block in <class:TestRequireInteraction>'
> 
> 195 tests, 454 assertions, 4 failures, 3 errors, 0 skips
> rake aborted!
> Command failed with status (1): [ruby -w -I"test" /usr/lib/ruby/gems/3.1.0/gems/rake-13.0.6/lib/rake/rake_test_loader.rb "test/lib/test_gem_inflector.rb" "test/lib/test_inflector.rb" "test/lib/test_real_mod_name.rb" "test/lib/zeitwerk/test_all_dirs.rb" "test/lib/zeitwerk/test_ancestors.rb" "test/lib/zeitwerk/test_autovivification.rb" "test/lib/zeitwerk/test_callbacks.rb" "test/lib/zeitwerk/test_collapse.rb" "test/lib/zeitwerk/test_concurrency.rb" "test/lib/zeitwerk/test_conflicting_directory.rb" "test/lib/zeitwerk/test_eager_load.rb" "test/lib/zeitwerk/test_exceptions.rb" "test/lib/zeitwerk/test_explicit_namespace.rb" "test/lib/zeitwerk/test_for_gem.rb" "test/lib/zeitwerk/test_ignore.rb" "test/lib/zeitwerk/test_logging.rb" "test/lib/zeitwerk/test_multiple.rb" "test/lib/zeitwerk/test_nested_root_directories.rb" "test/lib/zeitwerk/test_on_load.rb" "test/lib/zeitwerk/test_preload.rb" "test/lib/zeitwerk/test_push_dir.rb" "test/lib/zeitwerk/test_reloading.rb" "test/lib/zeitwerk/test_require_interaction.rb" "test/lib/zeitwerk/test_ruby_compatibility.rb" "test/lib/zeitwerk/test_shadowed.rb" "test/lib/zeitwerk/test_sti_old_school_workaround.rb" "test/lib/zeitwerk/test_top_level.rb" "test/lib/zeitwerk/test_unload.rb" "test/lib/zeitwerk/test_unloadable_cpath.rb" -v]
> 
> Tasks: TOP => default
> (See full trace by running task with --trace)
> ERROR: Test "ruby3.1" failed: 


The full build log is available from:
https://people.debian.org/~terceiro/ruby3.1/17/ruby-zeitwerk/ruby-zeitwerk_2.4.2-2+rebuild1663008338_amd64-2022-09-12T18:45:39Z.build

To reproduce this, you need to install ruby-all-dev >= 1:3.0+2. Depending on
when you try this, it might mean installing ruby-all-dev from experimental, or
if the transition has already started, a normal build on unstable will be
enough.  If you fail to reproduce, please provide a build log and diff it with
mine so that we can identify if something relevant changed in the meantime.

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 marking it as 'affects'-ing
this package. See https://www.debian.org/Bugs/server-control#affects
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