[`server-metrics` 0.3.0 is incompatible with 0.2.8](https://github.com/metamx/server-metrics/releases/tag/server-metrics-0.3.0) in the emitted jvm/gc metrics. So we can upgrade in 0.10.0, or only in 0.11.0.
server-metrics0.3.0 is incompatible with 0.2.8 in the emitted jvm/gc metrics. So we can upgrade in 0.10.0, or only in 0.11.0.