我有一个正在尝试在本地安装的私有 Rails 应用程序。它目前在托管环境中运行，但我想在本地安装它以开始进行更改。我已经确定我可以对“实时”服务器进行部署更新，但最近的一个失误“加强了在本地进行更改的必要性”。
经过大量阅读后，我确定我需要...
- 获取最新的存储库（它使用 SVN）
- 抓取数据库 mysqldump -u root --databases my_db_development > my_db_development_0110.sql
- 本地导入数据库（MAMP/Sequel Pro 注意到数据库中没有数据，尽管实时服务器中有数据- 这很奇怪吗？）
- 验证 database.yml（适配器：mysql，编码：utf8，数据库：my_db_development，用户名：root，密码：，主机：localhost）
我假设的下一步是进入我的本地目录并rake db:migrate --trace返回以下输出。
我有点不确定如何去理解和确定我无法前进的原因。关于我是否错过了什么或可能需要改变什么的任何想法？
(in /Users/me/my_repo)
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute db:migrate
rake aborted!
Multiple migrations have the version number 1
/Users/me/.gem/ruby/1.8/gems/activerecord-2.1.2/lib/active_record/migration.rb:472:in `migrations'
/Users/me/.gem/ruby/1.8/gems/activerecord-2.1.2/lib/active_record/connection_adapters/mysql_adapter.rb:15:in `inject'
/Users/me/.gem/ruby/1.8/gems/activerecord-2.1.2/lib/active_record/migration.rb:465:in `each'
/Users/me/.gem/ruby/1.8/gems/activerecord-2.1.2/lib/active_record/migration.rb:465:in `inject'
/Users/me/.gem/ruby/1.8/gems/activerecord-2.1.2/lib/active_record/migration.rb:465:in `migrations'
/Users/me/.gem/ruby/1.8/gems/activerecord-2.1.2/lib/active_record/migration.rb:431:in `migrate'
/Users/me/.gem/ruby/1.8/gems/activerecord-2.1.2/lib/active_record/migration.rb:373:in `up'
/Users/me/.gem/ruby/1.8/gems/activerecord-2.1.2/lib/active_record/migration.rb:356:in `migrate'
/Users/me/.gem/ruby/1.8/gems/rails-2.1.2/lib/tasks/databases.rake:99
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `call'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `execute'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `each'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `execute'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:in `invoke_with_call_chain'
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:583:in `invoke'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `each'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2001:in `run'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in `run'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/bin/rake:31
/usr/bin/rake:19:in `load'
/usr/bin/rake:19