HSW: igt@i915_pm_rc6_residency@rc6-idle - timeout - slow test
https://intel-gfx-ci.01.org/tree/drm-tip/IGT_5536/shard-hsw2/igt@i915_pm_rc6_residency@rc6-idle.html https://intel-gfx-ci.01.org/tree/drm-tip/IGT_5536/shard-hsw2/igt_runner8.txt
[221.760655] [075/137] (794s left) i915_pm_rc6_residency (rc6-idle)
Starting subtest: rc6-idle
[342.121423] Per-test timeout exceeded. Killing the current test with SIGQUIT.
[342.179266] Closing watchdogs
[342.180498] Initializing watchdogs
[342.180549] /dev/watchdog0