Contents of BuildBot.SpamAssassin.org
[http://buildbot.spamassassin.org/ruleqa/ The rule-QA app]; see RuleQaApp
And the odd log file:
[http://buildbot.spamassassin.org/bbmass/corpus_makeup.txt corpus_makeup.txt]; logs from the corpus-generation script, which generates the mc-fast/med/slow/slower corpora using even quantities of whatever's been uploaded via rsync.