encoding error

gistfile1.txt

ERROR Encoding::UndefinedConversionError: "\xD0" from ASCII-8BIT to UTF-8
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/activesupport-3.1.0.beta1/lib/active_support/buffered_logger.rb:104:in `write'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/activesupport-3.1.0.beta1/lib/active_support/buffered_logger.rb:104:in `block (2 levels) in flush'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/activesupport-3.1.0.beta1/lib/active_support/buffered_logger.rb:103:in `each'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/activesupport-3.1.0.beta1/lib/active_support/buffered_logger.rb:103:in `block in flush'
	<internal:prelude>:10:in `synchronize'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/activesupport-3.1.0.beta1/lib/active_support/buffered_logger.rb:102:in `flush'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/activesupport-3.1.0.beta1/lib/active_support/log_subscriber.rb:84:in `block in flush_all!'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/activesupport-3.1.0.beta1/lib/active_support/log_subscriber.rb:84:in `each'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/activesupport-3.1.0.beta1/lib/active_support/log_subscriber.rb:84:in `flush_all!'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/railties-3.1.0.beta1/lib/rails/rack/logger.rb:29:in `after_dispatch'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/railties-3.1.0.beta1/lib/rails/rack/logger.rb:15:in `call'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/rack-1.3.0.beta/lib/rack/runtime.rb:17:in `call'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/activesupport-3.1.0.beta1/lib/active_support/cache/strategy/local_cache.rb:72:in `call'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/rack-1.3.0.beta/lib/rack/lock.rb:34:in `call'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/actionpack-3.1.0.beta1/lib/action_dispatch/middleware/static.rb:53:in `call'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/railties-3.1.0.beta1/lib/rails/engine.rb:438:in `call'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/railties-3.1.0.beta1/lib/rails/rack/log_tailer.rb:14:in `call'
	/Users/yury/.rvm/gems/ruby-1.9.2-p180@railspre/gems/rack-1.3.0.beta/lib/rack/handler/webrick.rb:59:in `service'
	/Users/yury/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'
	/Users/yury/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
	/Users/yury/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'