Retroactively filing so as to be considered for backport.
mvn -f subversion-plugin/pom.xml hpi:run does not work: you will not get the version under development, but rather 1.26. (Via jenkins-test-harness; not even the 1.34 bundled in Jenkins 1.466 WAR!) The console shows:
If you change the parent POM to 1.513, it works, because this regression (from https://github.com/jenkinsci/jenkins/commit/32d5c23 in 1.448) was fixed in https://github.com/jenkinsci/jenkins/commit/7547681a24fadab2a909729413b9f16da90b2d16 in 1.512 then https://github.com/jenkinsci/jenkins/commit/5aa4af75c2c4c66541f1fd24ef82c5d46a79940d in 1.513.
|Field||Original Value||New Value|
|Resolution||Fixed [ 1 ]|
|Status||Open [ 1 ]||Resolved [ 5 ]|
|Labels||lts-candidate plugin||lts-1.509.3-fixed plugin|
|Labels||lts-1.509.3-fixed plugin||1.509.3-fixed plugin|
|Workflow||JNJira [ 149659 ]||JNJira + In-Review [ 193231 ]|