https://git.ruby-lang.org/ruby.git/commit/?id=13d2225c46

From 13d2225c460cfc3daa679acb89433289527a844f Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@g...>
Date: Fri, 26 Aug 2022 23:32:01 -0700
Subject: Try rm -rf instead of FileUtils.rm_rf

FileUtils.rm_rf started to randomly fail on http://ci.rvm.jp/results/trunk-mjit@phosphorus-docker
since around https://github.com/ruby/fileutils/pull/99.
---
 test/rubygems/helper.rb | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/test/rubygems/helper.rb b/test/rubygems/helper.rb
index cb0177adb2..b9bc72a1f3 100644
--- a/test/rubygems/helper.rb
+++ b/test/rubygems/helper.rb
@@ -465,7 +465,12 @@ class Gem::TestCase < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/helper.rb#L465
 
     Dir.chdir @current_dir
 
-    FileUtils.rm_rf @tempdir
+    # FileUtils.rm_rf randomly fails on ci.rvm.jp trunk-mjit
+    if ENV['RUBY_DEBUG']&.include?('ci')
+      system('rm', '-rf', @tempdir.shellescape, exception: true)
+    else
+      FileUtils.rm_rf @tempdir
+    end
 
     ENV.replace(@orig_env)
 
-- 
cgit v1.2.1


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