Logback configuration splitting to stdout and stderr

logback.xml

<configuration>
  <appender name="STDERR" class="ch.qos.logback.core.ConsoleAppender">
    <target>System.err</target>
    <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
      <level>WARN</level>
    </filter>
    <encoder>
        <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
    </encoder>
  </appender>
  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <target>System.out</target>
    <filter class="ch.qos.logback.classic.filter.LevelFilter">
      <level>DEBUG</level>
      <onMatch>ACCEPT</onMatch>
    </filter>
    <filter class="ch.qos.logback.classic.filter.LevelFilter">
      <level>INFO</level>
      <onMatch>ACCEPT</onMatch>
    </filter>
    <filter class="ch.qos.logback.classic.filter.LevelFilter">
      <level>TRACE</level>
      <onMatch>ACCEPT</onMatch>
    </filter>
    <filter class="ch.qos.logback.classic.filter.LevelFilter">
      <level>WARN</level>
      <onMatch>DENY</onMatch>
    </filter>
    <filter class="ch.qos.logback.classic.filter.LevelFilter">
      <level>ERROR</level>
      <onMatch>DENY</onMatch>
    </filter>
    <encoder>
        <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
    </encoder>
  </appender>
  <root level="INFO">
    <appender-ref ref="STDOUT" />
    <appender-ref ref="STDERR" />
  </root>
</configuration>