When jclouds parses authentication response headers from Swift, it does not attempt to recognize all of them case-insensitively. It also does not add them to the parsed object in the normalized capitalization that is expected by downstream code.
This is a more general case of
JCLOUDS-155 that was not correctly fixed. See https://issues.apache.org/jira/browse/JCLOUDS-155?focusedCommentId=14087496&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14087496
Reported by Fabian Lange. Thanks, Fabian!