rake db：migrate给出了不兼容的库版本错误

Question

执行rake db：migrate时出现以下错误

捆绑安装已执行带有成功消息-捆绑完成！ 102个Gemfile依赖项，现已安装252个Gem。

/Users/username/.rvm/gems/ruby-2.3.1@portal/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `require': incompatible library version - /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/pg-0.18.4/lib/pg_ext.bundle (fatal)

    from /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `block in require'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:240:in `load_dependency'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `require'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/pg-0.18.4/lib/pg.rb:4:in `<top (required)>'
    from /Users/username/.rvm/rubies/ruby-2.3.1/lib/ruby/site_ruby/2.3.0/bundler/runtime.rb:81:in `require'
    from /Users/username/.rvm/rubies/ruby-2.3.1/lib/ruby/site_ruby/2.3.0/bundler/runtime.rb:81:in `block (2 levels) in require'
    from /Users/username/.rvm/rubies/ruby-2.3.1/lib/ruby/site_ruby/2.3.0/bundler/runtime.rb:76:in `each'
    from /Users/username/.rvm/rubies/ruby-2.3.1/lib/ruby/site_ruby/2.3.0/bundler/runtime.rb:76:in `block in require'
    from /Users/username/.rvm/rubies/ruby-2.3.1/lib/ruby/site_ruby/2.3.0/bundler/runtime.rb:65:in `each'
    from /Users/username/.rvm/rubies/ruby-2.3.1/lib/ruby/site_ruby/2.3.0/bundler/runtime.rb:65:in `require'
    from /Users/username/.rvm/rubies/ruby-2.3.1/lib/ruby/site_ruby/2.3.0/bundler.rb:114:in `require'
    from /Users/username/Documents/portal/config/application.rb:16:in `<top (required)>'
    from /Users/username/Documents/portal/Rakefile:4:in `require'
    from /Users/username/Documents/portal/Rakefile:4:in `<top (required)>'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/rake-11.2.2/lib/rake/rake_module.rb:28:in `load'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/rake-11.2.2/lib/rake/rake_module.rb:28:in `load_rakefile'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/rake-11.2.2/lib/rake/application.rb:686:in `raw_load_rakefile'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/rake-11.2.2/lib/rake/application.rb:96:in `block in load_rakefile'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/rake-11.2.2/lib/rake/application.rb:178:in `standard_exception_handling'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/rake-11.2.2/lib/rake/application.rb:95:in `load_rakefile'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/rake-11.2.2/lib/rake/application.rb:79:in `block in run'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/rake-11.2.2/lib/rake/application.rb:178:in `standard_exception_handling'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/rake-11.2.2/lib/rake/application.rb:77:in `run'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/gems/rake-11.2.2/exe/rake:27:in `<top (required)>'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/bin/rake:23:in `load'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/bin/rake:23:in `<main>'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/bin/ruby_executable_hooks:24:in `eval'
    from /Users/username/.rvm/gems/ruby-2.3.1@portal/bin/ruby_executable_hooks:24:in `<main>'

预先感谢

Answer 1

看来您的postgres gem版本与该版本的activesupport不兼容。

请发布这些文件，以便我们获取更多信息：-.ruby-version（如果存在）-.ruby-gemset（如果存在）-.rvmrc（如果存在）-宝石文件-Gemfile.lock

我猜您的ActionSupport（rails库）已升级，并且系统的PostgreSQL无法升级到您的应用程序需要的postgres Gem版本。

Answer 2

根据描述和问题中提到的日志，似乎有损坏的PATH，但是在浏览了一些链接之后，发现下面提到的链接暗示着ruby-2.3.1。中的错误。

https://bugs.ruby-lang.org/issues/9760#note-14

作为一种快速的解决方法，我建议安装ruby-2.3.3。执行以下提到的命令进行安装：

rvm install ruby-2.3.3
rvm gemset empty
gem install bundler
bundle install
它肯定会工作，因为我也在本地计算机上安装了此ruby版本，并且可以工作。