         switch model.state {
         case .will(let a):
           switch a {
-          case .launched(let _):
+          case .launched(_):
             var new = model
             new.shouldLaunch = false
             return new

      .rendered(events.map { $0.session })
      .map { model -> Session.Model in
        var new = model
        new.shouldLaunch = true
        switch model.shouldSaveApplicationState {
        case .considering(let coder):
          new.shouldSaveApplicationState = .allowing(true)
        default:
          break
        }
        return new
      }

      .rendered(events.map { $0.session })
      .map { model -> Session.Model in
        var new = model
        if case .willContinue(let type) = model.userActivityState {
          new.userActivityState = .shouldNotifyUserActivitiesWithType(type)
        }
        return new
      }
