sleep 0.5
The tests fail randomly on some platforms. http://rubyci.s3.amazonaws.com/ubuntu/ruby-master/log/20220605T213004Z.fail.html.gz http://rubyci.s3.amazonaws.com/arch/ruby-master/log/20220605T210003Z.fail.html.gz ``` [15737/21701] TestThreadInstrumentation#test_thread_instrumentation_fork_safe/home/chkbuild/chkbuild/tmp/build/20220605T213004Z/ruby/tool/lib/test/unit/assertions.rb:109:in `assert': Expected 0 to be nonzero?. (Test::Unit::AssertionFailedError) ``` The failures seem to depend on context switches. I suspect `sleep 0.05` is too short, so this change tries to extend the wait time.
