This code works in version 2.11, but don't work in version 2.12 and 2.13.

[yunfan123]

scala> :paste
// Entering paste mode (ctrl-D to finish)

import java.util.concurrent.{ExecutorService, Executors}

  import scala.concurrent.duration.Duration
  import scala.concurrent.{Await, ExecutionContext, ExecutionContextExecutor, Future}
  import scala.util.{Failure, Success}

  val pool: ExecutorService = Executors.newFixedThreadPool(10)

  implicit val ec: ExecutionContextExecutor =
    ExecutionContext.fromExecutorService(pool)


  def ff(i: Int): Future[Int] = Future{
    println(i)
    Thread.sleep(i * 100)
    println(i)
    i
  }

  val futures: List[Future[Int]] = (1 to 10).map(i => ff(i)).toList
  val f = Future.sequence(futures) andThen {
    case Success(_) =>
      println("All OK")
  }
  println("Before ready")
  Await.ready(f, Duration.Inf)
  println("After ready")
  pool.shutdown()


// Exiting paste mode, now interpreting.

In scala 2.12 or 2.13 (with java 8) paste mode, it just print Before ready.
But it works fine in 2.11 paste mode.

[SethTisue]

almost certainly a duplicate of #9076