import os

var
  chan: Channel[string]

proc ourThread() {.thread.} =
  sleep(100)
  chan.send "Hello"
  sleep(100)
  chan.send "World"
  sleep(100)
  chan.send ""

chan.open
proc doThread(): Thread[void] =
  createThread(result, ourThread)

let t = doThread()

while true:
  let msg = chan.recv
  if msg.len == 0: break
  echo msg

chan.close
echo "Thread completed"
No stack traceback available
SIGSEGV: Illegal storage access. (Attempt to read from nil?)
# This was my error, now I understand how I got it