igt@i915_pm_rc6_residency@rc6-(idle|fence)- warn/fail/incomplete - WARNING: Total energy used while idle: .*mJ

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_9307/shard-tglb2/igt@i915_pm_rc6_residency@rc6-idle.html

Out	
IGT-Version: 1.25-g8cffaebec (x86_64) (Linux: 5.10.0-rc3-CI-CI_DRM_9307+ x86_64)
Starting subtest: rc6-idle
Total energy used for normal: 60.7mJ (20.2mW)
Total energy used for boost: 50.5mJ (16.8mW)
Total energy used for once: 61.0mJ (20.3mW)
Subtest rc6-idle: SUCCESS (12.214s)
Err	
Starting subtest: rc6-idle
(i915_pm_rc6_residency:1480) WARNING: Total energy used while idle: 36.9mJ
Subtest rc6-idle: SUCCESS (12.214s)