(Feel free to update this bug's summary to be more specific.)
Component Readiness has found a potential regression in the following test:

TestNodePool/HostedCluster0/Main/TestNTOMachineConfigAppliedInPlace/EnsureNoCrashingPods

Significant regression detected.
Fishers Exact probability of a regression: 99.99%.
Test pass rate dropped from 100.00% to 92.11%.

Sample (being evaluated) Release: 4.20
Start Time: 2025-08-26T00:00:00Z
End Time: 2025-09-02T16:00:00Z
Success Rate: 92.11%
Successes: 35
Failures: 3
Flakes: 0
Base (historical) Release: 4.19
Start Time: 2025-05-18T00:00:00Z
End Time: 2025-06-17T23:59:59Z
Success Rate: 100.00%
Successes: 118
Failures: 0
Flakes: 0

View the test details report for additional context.

Three times in the last week the same failure pattern occurs, same batch of tests, and this is enough to now trip component readiness and trigger a half dozen regressions.

We need to know the root cause here to proceed with the release.

Filed by: dgoodwin@redhat.com