Affected Version:2.15.1-3752-geeceb1d00e

What steps will reproduce the problem?
1. Try the same job multiple times

What is the expected output?
Jobs are stacked in order of execution

What do you see instead?
Jobs are stacked backwards (green jobs after fixing upstream dependency is under the red job from 3 days before)

Ref. "v8_node_linux64_rel LUCI" on https://chromium-review.googlesource.com/c/v8/v8/+/1045310/5