The problem is that XML is invalid due to rerunError, rerunFailure, flakyFailure, flakyError are
simpleContent having stack trace as simple XML string-value. Additionally, it contains elements system-out, system-err which belong to complexType. The Jenkins and Travis should be informed about this fix and their plugins should adapt.
These elements should be complexType and the value of simpleContent should appear in new element stackTrace.