Hibernate exception when removing space, due to cascade relationship

Here is the exception we had. The build is here: https://bamboo.extranet.atlassian.com/browse/CONFFUNC-CLUST5MYSQLR-288

java.lang.Exception: org.springframework.dao.InvalidDataAccessApiUsageException: deleted object would be re-saved by cascade (remove deleted object from associations): 196743, of class: com.atlassian.confluence.spaces.Space; nested exception is net.sf.hibernate.ObjectDeletedException: deleted object would be re-saved by cascade (remove deleted object from associations): 196743, of class: com.atlassian.confluence.spaces.Space
at com.atlassian.confluence.AbstractConfluenceAcceptanceTest.xmlRpcExecute(AbstractConfluenceAcceptanceTest.java:2048)
at com.atlassian.confluence.AbstractConfluenceAcceptanceTest.cleanUp(AbstractConfluenceAcceptanceTest.java:301)
at com.atlassian.confluence.AbstractConfluenceAcceptanceTest.setUp(AbstractConfluenceAcceptanceTest.java:201)
at com.atlassian.confluence.PageExportAcceptanceTest.setUp(PageExportAcceptanceTest.java:13)
at junit.framework.TestCase.runBare(TestCase.java:125)
at net.sourceforge.jwebunit.junit.WebTestCase.runBare(WebTestCase.java:58)
at junit.framework.TestResult$1.protect(TestResult.java:106)
(29 more lines...)