I have a Subversion repository served by svnserve that only offers the PLAIN SASL authentication mechanism. Hudson cannot authenticate to this repository. After filling in the repository URL on the project configuration page, opening the link to the credential setting page, and providing the necessary username and password, I receive an "authentication failed" error message. Dumping the network traffic showed that the authentication response specified the ANONYMOUS mechanism instead of PLAIN.

This looks very much like svnkit issue 352 (link in the URL field), apparently fixed in svnkit 1.3.3, but as Hudson ships a patched version of the library, I don't expect to just drop in the official jar and have stuff work...