Debug CI failures

Author: noteflakes

.github/workflows/test.yml

@@ -32,4 +32,4 @@ jobs:
     - name: Compile C-extension
       run: bundle exec rake compile
     - name: Run tests
-      run:  bundle exec ruby test/test_um.rb --verbose
+      run:  bundle exec ruby test/test_um.rb --verbose  1>&2

test/helper.rb

@@ -50,18 +50,6 @@ def assert_in_range exp_range, act
   end
 end
 
-class IOURingBaseTest < Minitest::Test
-  attr_accessor :ring
-  
-  def setup
-    @ring = IOU::Ring.new
-  end
-
-  def teardown
-    ring.close
-  end
-end
-
 class UMBaseTest < Minitest::Test
   attr_accessor :machine
 
@@ -70,5 +58,6 @@ def setup
   end
 
   def teardown
+    # @machine&.cleanup
   end
 end

test/test_um.rb

@@ -364,6 +364,7 @@ def setup
 
   def teardown
     @server&.close
+    super
   end
 
   def test_accept
@@ -389,6 +390,7 @@ def setup
 
   def teardown
     @server&.close
+    super
   end
 
   def test_accept_each