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解决方案，报错里已经说明了：
我的解决方案：
sudo chown -R "$USER":admin /usr/local
stackoverflow上的答案
I was able to solve the problem by using chown
on the folder:
sudo chown -R "$USER":admin /usr/local
Also you'll (most probably) have to do the same on /Library/Caches/Homebrew
:
sudo chown -R "$USER":admin /Library/Caches/Homebrew
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