Error building new OpenWRT-yun image

I agree the error should be that one, but I would ask you to make another try. Delete file nohup.out, then re run with

nice -n 10 nohup make -j 1 V=s &

This will force each package to be built one after the other, without mixing logs. This way the last error message will be the right one.
Sorry for the ping pong of requests: I'll update the readme and add a troubleshooting section