Ruby

Applied in changeset git|fdfad905227a0e2e4c224d87181041fb75d5082e.

Revert "Promote uri to default gems"

This reverts commit c5b4d2a2592942766dc2789f46105b91eba7026a.

This commit affects with activation feature of RubyGems.
[Bug #16337][ruby-core:95768]

I'm still seeing this on 2.7.0p0, even though it looks like it should have been fixed based on comment #2. The workaround in comment #1 still helps.

$ /opt/google-fluentd/embedded/bin/ruby --version
ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [x86_64-linux]
$ /opt/google-fluentd/embedded/bin/ruby /opt/google-fluentd/embedded/bin/rake --version
Traceback (most recent call last):
        10: from /opt/google-fluentd/embedded/bin/rake:23:in `<main>'
         9: from /opt/google-fluentd/embedded/lib/ruby/site_ruby/2.7.0/rubygems.rb:303:in `activate_bin_path'
         8: from /opt/google-fluentd/embedded/lib/ruby/site_ruby/2.7.0/rubygems.rb:303:in `synchronize'
         7: from /opt/google-fluentd/embedded/lib/ruby/site_ruby/2.7.0/rubygems.rb:305:in `block in activate_bin_path'
         6: from /opt/google-fluentd/embedded/lib/ruby/site_ruby/2.7.0/rubygems.rb:242:in `finish_resolve'
         5: from /opt/google-fluentd/embedded/lib/ruby/site_ruby/2.7.0/rubygems/request_set.rb:435:in `resolve_current'
         4: from /opt/google-fluentd/embedded/lib/ruby/site_ruby/2.7.0/rubygems/request_set.rb:435:in `new'
         3: from /opt/google-fluentd/embedded/lib/ruby/site_ruby/2.7.0/rubygems/resolver/set.rb:24:in `initialize'
         2: from /opt/google-fluentd/embedded/lib/ruby/site_ruby/2.7.0/rubygems/core_ext/kernel_require.rb:42:in `require'
         1: from /opt/google-fluentd/embedded/lib/ruby/site_ruby/2.7.0/rubygems/core_ext/kernel_gem.rb:67:in `gem'
/opt/google-fluentd/embedded/lib/ruby/site_ruby/2.7.0/rubygems/core_ext/kernel_gem.rb:67:in `synchronize': deadlock; recursive locking (ThreadError)
$ rm /opt/google-fluentd/embedded/lib/ruby/gems/2.7.0/specifications/default/uri-0.10.0.gemspec
$ /opt/google-fluentd/embedded/bin/ruby /opt/google-fluentd/embedded/bin/rake --version
rake, version 12.3.2

I couldn't reproduce it with my environment. Can you ask the maintainer of google-fluentd at first?