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

[sig-arch] events should not repeat pathologically for ns/openshift-machine-api

Significant regression detected.
Fishers Exact probability of a regression: 100.00%.
Test pass rate dropped from 100.00% to 92.25%.

Sample (being evaluated) Release: 4.19
Start Time: 2025-05-27T00:00:00Z
End Time: 2025-06-03T16:00:00Z
Success Rate: 92.25%
Successes: 119
Failures: 10
Flakes: 0

Base (historical) Release: 4.18
Start Time: 2025-01-26T00:00:00Z
End Time: 2025-02-25T23:59:59Z
Success Rate: 100.00%
Successes: 664
Failures: 0
Flakes: 0

View the test details report for additional context.

Major complicating factor here, this problem only occurred on build02, which for unrelated reasons was mistakenly deleted last night.

There is some suspicion we have a network egress problem here via looking at the disruption charts on these runs.

However it also has the hallmarks of an infra problem with the block of consecutive failures, then resolving, and I have confirmed some of the following green runs were also on build02.

We are not yet certain what this is.