cp3036 crashed on 2017-08-16, @MoritzMuehlenhoff depooled and rebooted:

12:22 jmm@puppetmaster1001: conftool action : set/pooled=no; selector: cp3036.esams.wmnet
12:25 moritzm: powercycling cp3036

No apparent cause in logs, and no history of other failure on this host, so re-pooling for now and closing this just to create a reference for the future. Will re-open if it fails again quickly.