https://github.com/jenkinsci/jenkins/blob/d5271c8d2f38a2ba8b1f9d8fcbb66070e5e5333d/core/src/main/java/hudson/Functions.java#L1813-L1818 does not indent additional lines with a custom #printStacktrace implementation, potentially resulting in confusing alternating "Caused by" and "Caused" lines (with output similar to the default implementation).