Ruby异常：`不兼容的字符编码：ASCII-8BIT和UTF-8`

Question

重要信息在底线！

序列化协议缓冲区消息时，Rails应用程序遇到异常：

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'

955行是：

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

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

重要信息

我仅在任何Web服务器（Apache + Passenger，WEBrick，Puma）的一台CentOS计算机上遇到此异常。 在Windows和其他CentOS机器上，一切都很好。 代码是相同的，每次测试之前都会重新创建数据库并为其设定种子。

Answer 1

通过将Ruby从2.0.0-p576降级到2.0.0-p481来解决

更新资料

p481不再可供下载。