presto-verifier/src/main/java/io/prestosql/verifier/Verifier.java/Verifier/takeUnchecked
class Verifier:    private static <T> T takeUnchecked(CompletionService<T> completionService)
            throws InterruptedException
    {
        try {
            return completionService.take().get();
        }
        catch (ExecutionException e) {
            throw new RuntimeException(e);
        }
    }