Date when I started the setup.sh for the first time: 2015-07-28 10:35.00 BST (GMT+1)
Was doing some clean up on my Ubuntu 15.04 32b virtual machine and decided to remove the default distribution of Lazarus/FPC and use yours.
I downloaded the setup.sh and ran it.
When it tried to compile all hell broke loose. I then went and had a look to see if I could figure out what was the problem and it was quite an easy fix:
The fpc-2.6.4.i386-linux.7z archive has fpc-2.6.4/bin/ppc386 pointing to "/home/delluser/fpctest/fpc-2.6.4/lib/fpc/2.6.4/ppc386". So there's the problem.
I then modified the setup.sh to make the correct link right after the "7za x" line and all went well.
So, someone doing the nightlies made a boo-boo