[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/425/ : UNSTABLE in 1h 38m 28s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/422/ : UNSTABLE in 2h 38m 50s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/132/ : UNSTABLE in 3h 48m 47s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/426/ : UNSTABLE in 4h 20m 31s