match_array is taking too long to finish

[RicardoTrindade]

Subject of the issue

Was writing some tests in my project, was using match_array to make some expectations and noticed that it causing some tests to never finish.

Your environment

• Ruby version: ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-linux]
• rspec-expectations version: 3.9.0

Steps to reproduce

Try and run this test locally and see if it finishes (it will most likely fail nonetheless)

    it do
      a = Array.new(50) { rand(1...9) }
      b = Array.new(50) { rand(1...9) }
      expect(a).to match_array(b)
    end

Expected behavior

The test should finish running (regardless of pass/fail)

Actual behavior

The test never finishes or takes too long to finish (with smaller arrays)