Failed build artifacts appear to be archived, but there is no way to access them from the UI. (This is for a matrix project.) The artifact in this case would provide insight into why the build failed.

It may be worth noting that this particular project has never had a successful build where the artifacts were archived.

[WARNINGS] Not changing build status, since no threshold has been exceeded
Archiving artifacts
Recording test results
Recording fingerprints
Email was triggered for: Failure
Email was triggered for: Still Failing
Trigger Failure was overridden by another trigger and will not send an email.
Sending email for trigger: Still Failing
Sending email to: hudson@x.x
Finished: FAILURE