batchtools_slurm futures block (Was: stdout/stderr to log file only when using slurm?)

I have a loop like this:

for (i in 14:11) {
  f <- future({
    warning("Sleeping ", i, " seconds")
    Sys.sleep(i)
    saveRDS(i^2, paste0("tmp-data/res", i))
  })
} 

and I would to output the warning in the log files only.
I've seen the new option split in a blog post to do both (but I didn't find it in the documentation).
The problem is that capturing this output and returning it to the main session usually blocks my session for a long time (sometimes minutes), and I would like to avoid this.

Basically, is there any way to use future/future.batchtools just to submit jobs on a slurm cluster without returning anything to the session sending them?

Comienza reproduciendo el bucle future() mostrado con future.batchtools en un clúster de Slurm e investiga la opción split mencionada para gestionar la salida. Se considera terminado cuando se pueden enviar trabajos sin que la sesión que los envía tenga que esperar a la salida capturada, mientras que las advertencias se escriben únicamente en los archivos de registro de Slurm.