[DRE-maint] Bug#996510: ruby-spring: FTBFS with ruby3.0: ERROR: Test "ruby3.0" failed: Errno::ENOENT: No such file or directory @ rb_check_realpath_internal - /tmp/d20211005-1582813-mce9ae

[Antonio Terceiro]

Source: ruby-spring
Version: 2.1.0-2
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-spring 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):
> Errno::ENOENT: No such file or directory @ rb_check_realpath_internal - /tmp/d20211005-1582813-mce9ae
>     /<<PKGBUILDDIR>>/lib/spring/watcher/abstract.rb:20:in `realpath'
>     /<<PKGBUILDDIR>>/lib/spring/watcher/abstract.rb:20:in `initialize'
>     /<<PKGBUILDDIR>>/lib/spring/watcher/polling.rb:9:in `initialize'
>     /<<PKGBUILDDIR>>/test/support/watcher_test.rb:21:in `new'
>     /<<PKGBUILDDIR>>/test/support/watcher_test.rb:21:in `watcher'
>     /<<PKGBUILDDIR>>/test/support/watcher_test.rb:30:in `teardown'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:103:in `block (4 levels) in run'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:195:in `capture_exceptions'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:102:in `block (3 levels) in run'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:101:in `each'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:101: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'
> 
> 32 runs, 31 assertions, 0 failures, 8 errors, 0 skips
> rake aborted!
> Command failed with status (1): [ruby -w -I"test" /usr/lib/ruby/gems/3.0.0/gems/rake-13.0.3/lib/rake/rake_test_loader.rb "test/unit/client/help_test.rb" "test/unit/client/version_test.rb" "test/unit/commands_test.rb" "test/unit/process_title_updater_test.rb" "test/unit/watcher_test.rb" -v]
> 
> Tasks: TOP => default
> (See full trace by running task with --trace)
> ERROR: Test "ruby3.0" failed: 


The full build log is available at
https://people.debian.org/~kanashiro/ruby3.0/round2/builds/3/ruby-spring/ruby-spring_2.1.0-2+rebuild1633395982_amd64.build.txt
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