scala> case class Deployment(name: String, status: Either[String, Int])
defined class Deployment

scala> val deps = Set(Deployment("g1", Right(1)), Deployment("b1", Left("bad 1")), Deployment("g2", Right(2)), Deployment("b2", Left("bad 2")))
deps: scala.collection.immutable.Set[Deployment] = Set(Deployment(g1,Right(1)), Deployment(b1,Left(bad 1)), Deployment(g2,Right(2)), Deployment(b2,Left(bad 2)))

scala> deps.foreach(d => d.status.left.foreach(m => println("%s: %s".format(d.name, m))))
b1: bad 1
b2: bad 2