Memory spike while building 1.29 binaries crashes staging runs #3837
Description
What happened:
When running builds in parallel, memory consumption jumps around the time go-runner is being built. This causes the staging process to exit as memory is exhausted.
What you expected to happen:
Builds should finish successfully
How to reproduce it (as minimally and precisely as possible):
Run a staging run of the release-1.29 branch. Or those with access can check out run c56008f6 in the GCB console.
Anything else we need to know?:
We mitigated the crashing stage run by switching to serial builds. This is a temporary measure, however as it causes the builds to run slower.