T5892a.hs:12:8: Warning:
    Fields of ‘Version’ not initialised: Data.Version.versionTags
    In the expression: Version {..}
    In the expression: let versionBranch = [] in Version {..}
    In an equation for ‘foo’:
        foo (Version {..}) = let versionBranch = ... in Version {..}

<no location info>: 
Failing due to -Werror.