```java -Djava.io.tmpdir=./tmp -Djruby.native.verbose=true -jar example.jar foo
Successfully loaded native POSIX impl.
[2020-02-25 13:00:00 -0500] [INFO] [5612] main thread
[2020-02-25 13:00:01 -0500] [INFO] [5612] [{:tid=>1}] foo
[2020-02-25 13:00:01 -0500] [INFO] [5612] [{:tid=>3}] foo
[2020-02-25 13:00:01 -0500] [INFO] [5612] [{:tid=>2}] foo
[2020-02-25 13:00:01 -0500] [INFO] [5612] [{:tid=>5}] foo
[2020-02-25 13:00:01 -0500] [INFO] [5612] [{:tid=>4}] foo
[{:tid=>1, :message=>"foo"},
 {:tid=>2, :message=>"foo"},
 {:tid=>3, :message=>"foo"},
 {:tid=>4, :message=>"foo"},
 {:tid=>5, :message=>"foo"}]```