How to work with the portdistfiles directory?

[grahamperrin]

citrix_ica-13.10.0.log

From the log:

Can't open /portdistfiles/QuoVadisEuropeEVSSLCAG1.crt for reading, No such file or directory

I have a copy of the .crt file at the path below, do I also need a copy elsewhere?

% file /usr/ports/distfiles/QuoVadisEuropeEVSSLCAG1.crt 
/usr/ports/distfiles/QuoVadisEuropeEVSSLCAG1.crt: PEM certificate
% grep DISTFILES /usr/local/etc/poudriere.conf | grep -v \#
DISTFILES_CACHE=/usr/ports/distfiles
% 

The log, in context: poudriere-bulk.txt