FYI, this is quickly and easily reproducible, happens within seconds,
and hits the same spot every time. Note-to-self (not for general
consumption): my unit test to provoke this is to start the cogserver
and run this shell script:
#!/bin/bash
i=0
while true ; do
let i=$i+1
if [ "$(($i % 2000))" -eq "0" ] ; then
echo loop $i
fi
# echo '(display ctr)' | nc localhost 17001
echo '(NumberNode ctr)' | nc localhost 17001
done
other testing variants are described in
https://github.com/opencog/opencog/issues/2550
