To help us provide a good developer experience, we track some straightforward metrics when running certain tasks locally and ship them to a service that we run. To disable this functionality, specify `CI_STATS_DISABLED=true` in your environment.
* Total execution time of `@kbn/optimizer` runs as well as the following metadata about the runs: The number of bundles created, the number of bundles which were cached, usage of `--watch`, `--dist`, `--workers` and `--no-cache` flags, and the count of themes being built.