我已经搜索了很长时间，但找不到任何对我有帮助的东西。我已经尝试了这些答案中所述的所有内容： RVM ruby 安装错误 - Mac、 Github- Ruby 安装程序问题”但没有任何帮助。
因此，当我尝试通过 home-brew 安装 texi2html 时，我得到以下输出：
==> Verifying texi2html-5.0.tar.gz checksum
tar xf /Users/ar2/Library/Caches/Homebrew/texi2html-5.0.tar.gz -C /private/tmp/texi2html-20180718-71233-q5fub1
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes/o.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes/L.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes/a.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes/U.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes/E.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes/Y.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes/aa.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes/I.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes/c.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes/AE.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes/oe.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes/o.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes/L.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes/a.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes/U.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes/E.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes/Y.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes/aa.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes/I.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes/c.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes/AE.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes/oe.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes_no_unicode/o.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes_no_unicode/L.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes_no_unicode/a.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes_no_unicode/U.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes_no_unicode/E.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes_no_unicode/Y.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes_no_unicode/aa.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes_no_unicode/I.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes_no_unicode/c.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes_no_unicode/AE.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_latin1_use_nodes_no_unicode/oe.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unicode/o.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unicode/L.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unicode/a.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unicode/U.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unicode/E.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unicode/Y.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unicode/aa.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unicode/I.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unicode/c.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unicode/AE.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unicode/oe.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes/o.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes/L.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes/a.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes/U.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes/E.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes/Y.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes/aa.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes/I.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes/c.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes/AE.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes/oe.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unidecode/o.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unidecode/L.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unidecode/a.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unidecode/U.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unidecode/E.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unidecode/Y.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unidecode/aa.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unidecode/I.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unidecode/c.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unidecode/AE.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_use_nodes_no_unidecode/oe.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes_no_unidecode/o.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes_no_unidecode/L.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes_no_unidecode/a.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes_no_unidecode/U.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes_no_unidecode/E.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes_no_unidecode/Y.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes_no_unidecode/aa.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes_no_unidecode/I.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes_no_unidecode/c.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes_no_unidecode/AE.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res_all/nodetest_utf8_use_nodes_no_unidecode/oe.txt: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes/OE.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes/C.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes/A.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes/o.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes/ae.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes/Y.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes/e.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes/AA.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes/I.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes/U.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes/L.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes/OE.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes/C.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes/A.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes/o.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes/ae.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes/Y.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes/e.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes/AA.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes/I.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes/U.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes/L.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes_no_unicode/OE.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes_no_unicode/C.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes_no_unicode/A.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes_no_unicode/o.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes_no_unicode/ae.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes_no_unicode/Y.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes_no_unicode/e.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes_no_unicode/AA.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes_no_unicode/I.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes_no_unicode/U.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_latin1_use_nodes_no_unicode/L.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unicode/OE.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unicode/C.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unicode/A.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unicode/o.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unicode/ae.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unicode/Y.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unicode/e.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unicode/AA.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unicode/I.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unicode/U.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unicode/L.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes/OE.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes/C.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes/A.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes/o.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes/ae.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes/Y.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes/e.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes/AA.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes/I.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes/U.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes/L.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unidecode/OE.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unidecode/C.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unidecode/A.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unidecode/o.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unidecode/ae.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unidecode/Y.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unidecode/e.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unidecode/AA.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unidecode/I.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unidecode/U.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_use_nodes_no_unidecode/L.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes_no_unidecode/OE.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes_no_unidecode/C.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes_no_unidecode/A.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes_no_unidecode/o.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes_no_unidecode/ae.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes_no_unidecode/Y.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes_no_unidecode/e.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes_no_unidecode/AA.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes_no_unidecode/I.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes_no_unidecode/U.html: Can't unlink already-existing object
texi2html-5.0/test/encodings/res/nodetest_utf8_use_nodes_no_unidecode/L.html: Can't unlink already-existing object
texi2html-5.0/test/manuals/res/info-stnd/Index.html: Can't unlink already-existing object
tar: Error exit delayed from previous errors.
Error: Failure while executing: tar xf /Users/ar2/Library/Caches/Homebrew/texi2html-5.0.tar.gz -C /private/tmp/texi2html-20180718-71233-q5fub1
我已经尝试删除缓存文件，重新安装 Ruby 并通过 rvm 使用不同版本的 Ruby。无论我是直接输入brew install texi2html还是需要 texi2html 的东西（例如brew install opencv），都没有区别。我什至不知道问题是由 Ruby 还是 tar 或 texi2html 本身引起的。
我希望你能帮助我。最诚挚的问候， Aaroknight