+> [4.485137] [msg_test/INFO] Declared tracing categories:
+> [4.485137] [msg_test/INFO] request
+> [4.485137] [msg_test/INFO] finalize
+> [4.485137] [msg_test/INFO] report
+> [4.485137] [msg_test/INFO] compute
+> [4.485137] [msg_test/INFO] Declared marks:
+> [4.485137] [msg_test/INFO] msmark
+