How to prevent a program from crashing when the "OSError: Too many open files" error occurs?

[mrhdias]

This piece of code reproduces the issue.

As you can see the try except does not work 
    
    
    import asyncdispatch, asyncfile
    
    var n = 0
    var files: seq[AsyncFile]
    while n < 1024:
      try:
        let file = openAsync("/dev/null", fmRead)
        files.add(file)
        n += 1
      except IOError:
        echo "Error"
        asyncCheck sleepAsync(1000)
    
    n -= 1
    for i in 0 .. n:
      files[i].close()
    
    
    Run