我看了How to install earlier version of mongodb with homebrew?和
~> brew search mongo
homebrew/versions/libmongoclient-legacy mongo-c
homebrew/versions/mongodb24 mongodb ✔
homebrew/versions/mongodb26 mongodb24
libmongoclient mongodb26
libmongoclient-legacy mongoose
homebrew/php/php53-mongo Caskroom/cask/mongo-management-studio
homebrew/php/php54-mongo Caskroom/cask/mongochef
homebrew/php/php54-mongodb Caskroom/cask/mongodb
homebrew/php/php55-mongo Caskroom/cask/mongodbpreferencepane
homebrew/php/php55-mongodb Caskroom/cask/mongohub
homebrew/php/php56-mongo Caskroom/cask/mongoproc
homebrew/php/php56-mongodb Caskroom/cask/orelord-mongodb
Caskroom/cask/jeromelebel-mongohub Caskroom/cask/robomongo
查看homebrew versions，没有mongodb307或mongodb。
如何使用Homebrew安装Mongo 3.0.7？
Homebrew 0.9.5