Quoting https://github.com/gentoo/gentoo/pull/1997: "Dropping x86 because dev-ruby/listen and dev-ruby/rest-client dropped it too."
The x86 were dropped because of old stale keywording bugs like bug 562452. Feel free to test and keyword any dev-ruby packages for x86.
(In reply to Hans de Graaff from comment #1) > The x86 were dropped because of old stale keywording bugs like bug 562452. > Feel free to test and keyword any dev-ruby packages for x86. Since I'm not interested in using x86 and given the state with ruby package, I'm closing this bug.