Revert "Try reproducing the MinGW hang on time command (#6168)"

This reverts commit bee5089d6789401f265f87b2f23f1bd7ec63cec8.

Looking at https://github.com/ruby/ruby/runs/7564065637?check_suite_focus=true,
we concluded that the ruby process for test-all is stuck before exit
when this issue reproduces.

However, because of our limited bandwidth to support MinGW, we're not
investigating this, and therefore we need to keep skipping tests that
hang on this environment.

1 files changed, 7 insertions, 0 deletions

diff --git a/test/rinda/test_rinda.rb b/test/rinda/test_rinda.rb
index d937cd0f45..d8340e0fc4 100644
--- a/test/rinda/test_rinda.rb
+++ b/test/rinda/test_rinda.rb
@@ -496,6 +496,10 @@ class TupleSpaceProxyTest < Test::Unit::TestCase
   include TupleSpaceTestModule
 
   def setup
+    if RUBY_PLATFORM.match?(/mingw/)
+      @omitted = true
+      omit 'This test seems to randomly hang on GitHub Actions MinGW UCRT64'
+    end
     super
     ThreadGroup.new.add(Thread.current)
     @ts_base = Rinda::TupleSpace.new(1)
@@ -503,6 +507,9 @@ class TupleSpaceProxyTest < Test::Unit::TestCase
     @server = DRb.start_service("druby://localhost:0")
   end
   def teardown
+    return if @omitted
+    @omitted = false
+
     # implementation-dependent
     @ts_base.instance_eval{
       if th = @keeper