title: While parsing annotations could not find MAYBE in enum <none>. Scala + Micrometer
body: <p>While trying to use micrometer on a Scala project, I got this warning:</p>
  
  <blockquote>
    <p>[error] While parsing annotations in /Users/vargasmontero/.ivy2/cache/io.micrometer/micrometer-core/jars/micrometer-core-1.0.4.jar(io/micrometer/core/lang/Nullable.class), could not find MAYBE in enum .</p>
  </blockquote>
  
  <p>It was introduced in 1.0.0-rc.8 but I can't see the release in github.</p>
  
  <ul>
  <li>Sbt 1.1.1</li>
  <li>scala 2.12.5</li>
  <li>micrometer 1.0.4</li>
  </ul>