I've just tried with your newest version, and can't reproduce the problem. Maybe try to clear your cache.
it seems that the AI thinks the building is not yet finished (it happened in the past when there was a rounding problem between the hitpoints in the simulation and the one transfered to the AI. But that should be fixed now).
darnit I'm an idiot - I've used Linux for 10 years and never knew how to grep files. I thought you're meant to use the 'find' command to find text in files (I believe that 'find' runs 'gawk' or 'awk'). I never knew grep was so useful!
https://www.howtoforge.com/tutorial/linux-grep-command/
http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_04_02.html
These videos are less "showy". There's no need to show off graphics and gameplay when demonstrating pathfinding
See also, Retro Ahoy on Youtube and his video about Pacman's ghost ai https://youtu.be/15dxuAbTC0A?t=7m48s