diff --git a/Rakefile b/Rakefile
index 0ea6c54b3..765ee7151 100644
--- a/Rakefile
+++ b/Rakefile
@@ -25,12 +25,12 @@ test_config = lambda do |t|
   t.test_files = FileList["test/**/*_test.rb"].reject do |path|
     path =~ %r{test/stdlib/}
   end
-  if defined?(RubyMemcheck)
-    if t.is_a?(RubyMemcheck::TestTask)
+  # if defined?(RubyMemcheck)
+  #   if t.is_a?(RubyMemcheck::TestTask)
       t.verbose = true
       t.options = '-v'
-    end
-  end
+  #   end
+  # end
 end
 
 Rake::TestTask.new(test: :compile, &test_config)
@@ -238,6 +238,8 @@ task :stdlib_test => :compile do
     test_files.shuffle!
   end
 
+  ENV["TESTOPTS"] ||= "--verbose"
+
   sh "#{ruby} -Ilib #{bin}/test_runner.rb #{test_files.join(' ')}"
   # TODO: Ractor tests need to be run in a separate process
   sh "#{ruby} -Ilib #{bin}/test_runner.rb test/stdlib/CGI-escape_test.rb"
diff --git a/bin/test_runner.rb b/bin/test_runner.rb
index c63113ba3..e474ba3ec 100755
--- a/bin/test_runner.rb
+++ b/bin/test_runner.rb
@@ -18,6 +18,8 @@
   /cannot load such file -- #{lib}/
 end
 
+require 'test/unit'
+
 ARGV.each do |arg|
   begin
     load arg
@@ -29,3 +31,14 @@
     end
   end
 end
+
+args = []
+
+unless ENV["TESTOPTS"].nil?
+  require "shellwords"
+  args.concat Shellwords.shellsplit(ENV["TESTOPTS"])
+end
+
+exit Test::Unit::AutoRunner.run(false, nil, args)
+
+
diff --git a/test/stdlib/ObjectSpace_test.rb b/test/stdlib/ObjectSpace_test.rb
index bfbaab3e2..5e369e9ed 100644
--- a/test/stdlib/ObjectSpace_test.rb
+++ b/test/stdlib/ObjectSpace_test.rb
@@ -189,6 +189,10 @@ def test_reachable_objects_from
       ObjectSpace, :reachable_objects_from, nil
   end
 
+  def test_reachable_objects_from_root_no_assertion
+    ObjectSpace.reachable_objects_from_root
+  end
+
   def test_reachable_objects_from_root
     assert_send_type "() -> Hash[String, untyped]",
       ObjectSpace, :reachable_objects_from_root