For a little while now, the Stylesheets task on teijenkins.hcmc.uvic.ca has been showing as unstable, because of this warning:
Warning: XML resolver not found; external catalogs will be ignored
SPQR found the solution: my
/var/lib/jenkins/hudson-log-parse-rules file was out of date. The most recent version in SVN has a line suppressing that warning. This seems to be the fix:
cd /var/lib/jenkins sudo svn export https://tei.svn.sourceforge.net/svnroot/tei/trunk/P5/Utilities/hudson-log-parse-rules sudo chown jenkins hudson-log-parse-rules
Running a build right now to see if it's fixed.