I think this is a configuration issue, which is why I'm filing an issue here, but I'm not 100% sure.
Adding test-with-buildbots to [3.13] PRs in CPython runs on "AMD64 Alpine Linux PR". I don't think this should be the case becasue:
I don't think we should be running on 3.13 PRs if we're not running on 3.13 branch.
I'll have a think on this, but it's a tricky one. We don't currently check the base branch for PRs at all, and we'll have to compare that to the branches/not_branches configuration for each worker/builder to do anything about this.
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zware commented on Jan 8, 2026
I'll have a think on this, but it's a tricky one. We don't currently check the base branch for PRs at all, and we'll have to compare that to the branches/not_branches configuration for each worker/builder to do anything about this.