After upgrading Git Client plugin to version 3.2.1, Jenkins is unable to authenticate on Git (full stack trace in attachment):
According to pom-file, git-client plugin 3.2.1 depends on trilead-ssh2 version build-217-jenkins-11. Checking trilead-ssh2 sources on the tag trilead-ssh2-build-217-jenkins-11, we see the mismatch with line number:
Actually the exception is thrown in line 102, not 111. It seems that git-client plugin was built with a wrong branch of trilead-ssh2, that caused the regression.