When using the cvs2fossil tool to import a CVS repository
fossil version [4887a1da84] 2010-09-10 16:11:29 UTC fails:

>fossil: unknown command: test-import-manifest

Using fossil version [4c931047ef] 2010-05-14 17:02:31 UTC with the cvs2fossil tool from the current version [4887a1da84] succeeds in importing the CVS tree. I have not, however, checked whether this is the only fossil function missing in getting cvs2fossil working.