Ruby 异常：`不兼容的字符编码：ASCII-8BIT 和 UTF-8`

Question

重要信息在底线！

Rails 应用程序在序列化 Protocol Buffers 消息时遇到异常：

Exception(Encoding::CompatibilityError)：不兼容的字符编码：ASCII-8BIT 和 UTF-8

==== Stack trace: ====
/usr/local/rvm/gems/ruby-2.0.0-p576/gems/ruby-protocol-buffers-1.5.1/lib/protocol_buffers/runtime/encoder.rb:64:in `write'
/usr/local/rvm/gems/ruby-2.0.0-p576/gems/ruby-protocol-buffers-1.5.1/lib/protocol_buffers/runtime/encoder.rb:64:in `serialize_field_value'
/usr/local/rvm/gems/ruby-2.0.0-p576/gems/ruby-protocol-buffers-1.5.1/lib/protocol_buffers/runtime/encoder.rb:51:in `serialize_field'
/usr/local/rvm/gems/ruby-2.0.0-p576/gems/ruby-protocol-buffers-1.5.1/lib/protocol_buffers/runtime/encoder.rb:38:in `block in encode'
/usr/local/rvm/gems/ruby-2.0.0-p576/gems/ruby-protocol-buffers-1.5.1/lib/protocol_buffers/runtime/encoder.rb:15:in `each'
/usr/local/rvm/gems/ruby-2.0.0-p576/gems/ruby-protocol-buffers-1.5.1/lib/protocol_buffers/runtime/encoder.rb:15:in `encode'
/usr/local/rvm/gems/ruby-2.0.0-p576/gems/ruby-protocol-buffers-1.5.1/lib/protocol_buffers/runtime/message.rb:248:in `serialize'
/usr/local/rvm/gems/ruby-2.0.0-p576/gems/ruby-protocol-buffers-1.5.1/lib/protocol_buffers/runtime/message.rb:255:in `serialize_to_string'
/var/www/html/disp/lib/navs/navs.rb:955:in `compose_message'

第 955 行是：

[type].pack('N*') + msg.serialize_to_string

其中type 是整数，msg 是ProtocolBuffers::Message 的后代。

重要信息

我只在任何 Web 服务器（Apache+Passenger、WEBrick、Puma）中的一台 CentOS 机器上遇到此异常。在 Windows 和其他 CentOS 机器上一切都很好。代码是一样的，每次测试前都会重新创建数据库并播种。

Answer 1

通过将 Ruby 从 2.0.0-p576 降级到 2.0.0-p481 解决

更新

p481 不再可供下载。