Ruby Some unit tests fail as they use MiniTest which is no longer an alias for Minitest

29: /opt/qpid-proton/ruby/tests/test_tools.rb:28:in `rescue in <top (required)>': uninitialized constant MiniTest (NameError)
29: 
29: MiniTest::Test = MiniTest::Unit::TestCase
29: ^^^^^^^^
29: Did you mean? Minitest