inFunction.await();
    futureResult.cancel(true);
    shouldCompleteFunction.countDown();
    assertThrows(CancellationException.class, () -> futureResult.get());
    // TODO(cpovirk): implement interruption, updating this test:
    // https://github.com/google/guava/issues/1989
    assertEquals(1, gotException.getCount());
    // gotException.await();
    service.shutdown();
    service.awaitTermination(30, SECONDS);

    inFunction.await();
    futureResult.cancel(true);
    shouldCompleteFunction.countDown();
    assertThrows(CancellationException.class, () -> futureResult.get());
    // TODO(cpovirk): implement interruption, updating this test:
    // https://github.com/google/guava/issues/1989
    assertEquals(1, gotException.getCount());
    // gotException.await();
    service.shutdown();
    service.awaitTermination(30, SECONDS);

            break;
        }
        throw new AssertionError(status);
      }
      future.addListener(() -> provideValueAndCloser(consumer, this), executor);
    }

    @SuppressWarnings("Interruption") // We are propagating an interrupt from a caller.
    boolean cancel(boolean mayInterruptIfRunning) {
      logger.get().log(FINER, "cancelling {0}", closingFutureToString());