Update RubyGems to 3.0.6.

[headius]

No description provided.

[headius]

The errors are some stack overflow likely caused by some super or define_method bug. I'm not sure of the cause. I am going to disable the warn patch and see if that clears it up; it's not clear to me what it's for.

[headius]

The JRuby test failure appears to be some behavioral change in RG that's interfering with its use from within a jar file.

[headius]

Here are the failures currently.

MRI suite:

  1) Failure:
TestException#test_warning_warn_super [/home/travis/build/jruby/jruby/test/mri/ruby/test_exception.rb:1052]:

1. [2/2] Assertion for "stderr"
   | Expected /instance variable @a not initialized/ to match "Error: Your application used more stack memory than the safety cap of 2048K.\n" +
   | "Specify -J-Xss####k to increase it (#### = cap size in KB).\n" +
   | "Specify -w for full java.lang.StackOverflowError stack trace\n".

JRuby suite:

TestJarredGemsWithSpacesInDirectory: 
  test_jarred_gem_on_gem_path:					E
================================================================================
org/jruby/RubyKernel.java:1187:in `catch'
org/jruby/RubyKernel.java:1192:in `catch'
org/jruby/RubyKernel.java:1187:in `catch'
org/jruby/RubyKernel.java:1192:in `catch'
     26:     Gem.clear_paths
     27:     old = ENV['GEM_PATH']
     28:     ENV['GEM_PATH'] = File.expand_path('../gem.jar', __FILE__)
  => 29:     assert require('mygem')
     30:   ensure
     31:     ENV['GEM_PATH'] = old
     32:     Gem.clear_paths
/home/travis/build/jruby/jruby/test/jruby/test_jarred_gems.rb:29:in `test_jarred_gem_on_gem_path'
/home/travis/build/jruby/jruby/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:54:in `require'
org/jruby/RubyKernel.java:977:in `require'
Error: test_jarred_gem_on_gem_path(TestJarredGemsWithSpacesInDirectory): LoadError: no such file to load -- mygem
================================================================================
: (0.018789)
  test_list_gem_from_jar_with_spaces_in_directory:		F
================================================================================
org/jruby/RubyKernel.java:1187:in `catch'
org/jruby/RubyKernel.java:1192:in `catch'
org/jruby/RubyKernel.java:1187:in `catch'
org/jruby/RubyKernel.java:1192:in `catch'
      6: 
      7:   def test_list_gem_from_jar_with_spaces_in_directory
      8:     out = jruby(%q{-r"./test/jruby/dir with spaces/testgem.jar" -S jgem list})
  =>  9:     assert(out =~ /testgem/)
     10: 
     11:     cp = ENV['CLASSPATH']
     12:     begin
/home/travis/build/jruby/jruby/test/jruby/test_jarred_gems.rb:9:in `test_list_gem_from_jar_with_spaces_in_directory'
Failure: test_list_gem_from_jar_with_spaces_in_directory(TestJarredGemsWithSpacesInDirectory): <nil> is not true.
================================================================================

The stack overflow issue in the MRI suite seems to only happen when Warning.warn is replaced with a version that calls super, as in MRI's ruby/test_exception.rb. It may not be a problem in regular use.

[headius]

The stack overflow is no longer an issue, as I described in #5797

I have triaged the two JRuby suite failures and they both boil down to the same problem: #6060.

[headius]

We are opting to disable the tests broken by this update and fix the issue for 9.3. I don't think putting a jar file directly as GEM_PATH or requiring a jar containing a GEM_PATH layout are common use cases.