That is an interesting validation error. I don't have enough context to understand what exactly goes wrong here. It is of course a correct observation, as TraitBehavior>>users doesn't exist anymore.
Stephan + ./pharo Pharo-3.0-Issue-Tracker-Image.image eval Smalltalk os environment includesKey: 'JENKINS_URL' true + ./pharo Pharo-3.0-Issue-Tracker-Image.image ci slice test --html-resources=https://ci.inria.fr/pharo/view/3.0-Analysis/job/Pharo-3.0-Issue-Tracker-Image/ws/bootstrap/ --update-issue --next [32missue tracker authentification succeded[0m 'Fetching next issue...' 'Testing Slice 13274' https://pharo.fogbugz.com/f/cases/13274 [33mStarting validation of SLICE 13274 http://smalltalkhub.com/mc/Pharo/Pharo30Inbox/main/SLICE-Issue-13274-Replace-users-by-traitUsers-StephanEggermont.1[0m[0m Notice: Running a CIAndRule Notice: Running a CIChangeSliceValidationRule Notice: Loading SLICE 13274 http://smalltalkhub.com/mc/Pharo/Pharo30Inbox/main/SLICE-Issue-13274-Replace-users-by-traitUsers-StephanEggermont.1 ================================================================================ Validation Report: SLICE 13274 http://smalltalkhub.com/mc/Pharo/Pharo30Inbox/main/SLICE-Issue-13274-Replace-users-by-traitUsers-StephanEggermont.1 ================================================================================ [38;5;196mValidation Errors:[0m - A critical error happened while loading SLICE 13274 http://smalltalkhub.com/mc/Pharo/Pharo30Inbox/main/SLICE-Issue-13274-Replace-users-by-traitUsers-StephanEggermont.1 - FLMethodChanged: Materialization error. Method TraitBehavior>>#users changed its bytecodes. Archiving artifacts Description set: <a href="https://pharo.fogbugz.com/f/cases/13274">https://pharo.fogbugz.com/f/cases/13274</a> Deleting project workspace... done Finished: SUCCESS
