尝试命令行下使用：svn cleanup 或 svn cleanup 项目路径
svn update 后
svn: E155036: 请参阅命令 'svn upgrade'
svn: E155036: The working copy at '/root/IdeaProjects/trunk/LemonDataMarketProvider'
is too old (format 29) to work with client version '1.9.3 (r1718519)' (expects format 31). You need to upgrade the working copy first.
版本不一致，但在cleanup下不会提示此信息，于是执行 svn upgrade
再次执行svn cleanup
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