基于Travis CI的Linuxbrew

Question

我正试图在Travis CI上安装linuxbrew，但失败的原因我不明白。Travis CI声称：

default ruby version
ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-linux]

但是当我的.travis.yml文件执行以下操作时：

 sh -c "$(curl -fsSL https://raw.githubusercontent.com/Linuxbrew/install/master/install.sh)"

它在以下几个方面失败：

HEAD is now at 851177a29 docs: update gems. (#569)
/usr/lib/ruby/1.9.1/rubygems/version.rb:191:in `strip!': can't modify frozen String (RuntimeError)
    from /usr/lib/ruby/1.9.1/rubygems/version.rb:191:in `initialize'
    from -e:1:in `new'
    from -e:1:in `<main>'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/brew.rb:12:in `<main>': Homebrew must be run under Ruby 2.3! You're running 1.9.3. (RuntimeError)
Failed during: /home/linuxbrew/.linuxbrew/bin/brew update --force

我认为这曾经奏效(去年)，但突然失败了。我如何在Travis CI上安装Linuxbrew？

编辑

这是我的.travis.yml

language: cpp
sudo: required
dist: trusty

before_install:
  - sh -c "$(curl -fsSL https://raw.githubusercontent.com/Linuxbrew/install/master/install.sh)"

端编辑

谢谢。

Answer 1

看起来，虽然Travis CI上的Linuxbrew在识别哪个版本的Ruby安装时遇到了问题。若要修复，请使用以下可选的安装方法：

git clone https://github.com/Linuxbrew/brew.git ~/.linuxbrew
export HOMEBREW_FORCE_VENDOR_RUBY=1

在before_install部分