Stop logging ActionController::RoutingError Rails 3.2
The thing that logs/displays errors is the ActionDispatch::DebugExceptions middleware. You could just overwrite the log_error method, for example stick this in an initialiser:
class ActionDispatch::DebugExceptions alias_method :old_log_error, :log_error def log_error(env, wrapper) if wrapper.exception.is_a? ActionController::RoutingError return else old_log_error env, wrapper end endend