到组里面找到 Settings / CI/CD / Available runners
pause/resume runner 就可以了。
另外再删除几个 pipeline 记录，有可能 pipeline 日志太多了，达到了一定的限制条件。
删除的时候可能会提示
Are you sure you want to delete this pipeline? Doing so will expire all pipeline caches and delete all related objects, such as builds, logs, artifacts, and triggers. This action cannot be undone.
如果 runner 接收到了 job, 查看 runner 的运行日志，可能会有如下提示
Checking for jobs... received job=xxxx repo_url=http://xxx.com/xxx/xxx/xxx runner=xxx
