$ fluent-bit -c fluent-bit.conf
[0] tail.0: [0.000000000, {"log"=>"single line...
[1] tail.0: [1626634867.472226330, {"log"=>"Dec 14 06:41:08 Exception in thread "main" java.lang.RuntimeException: Something has gone wrong, aborting!
at com.myproject.module.MyProject.badMethod(MyProject.java:22)
at com.myproject.module.MyProject.oneMoreMethod(MyProject.java:18)
at com.myproject.module.MyProject.anotherMethod(MyProject.java:14)
at com.myproject.module.MyProject.someMethod(MyProject.java:10)
at com.myproject.module.MyProject.main(MyProject.java:6)
[2] tail.0: [1626634867.472226330, {"log"=>"another line...