Stale data on bots is interfering with the GN step about flutter HOT 8 CLOSED

Here is a successful run from yesterday, it doesn't print out that warning at the clobber step: https://ci.chromium.org/ui/p/flutter/builders/try/Mac%20Engine%20Drone/856718/overview

That seems to indicate that is a valid warning that should be investigated.

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I'm dropping this to p1 since it seems that when you play bot roulette you may get one not in a bad state.

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https://flutter-review.googlesource.com/c/recipes/+/57400 <- forces the cache to be remounted, which should avoid the inconsistency until the cache is back in a good state.

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Once the caches are back in a good state, we should revert https://flutter-review.googlesource.com/c/recipes/+/57400

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I don't understand the code, but would it be preferable not to revert that CL? It seems like slower but more correct builds would be preferable. An optimization that requires manual massaging doesn't seem like a good tradeoff these days.

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I don't understand the code, but would it be preferable not to revert that CL? It seems like slower but more correct builds would be preferable. An optimization that requires manual massaging doesn't seem like a good tradeoff these days.

That's a fair question. My sense is this doesn't happen that often, so not sure it's worth increased build time, but I have no strong opinion either way.

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If there are no obvious negative side-effects (like builds timing out and turning the tree red), we can leave it landed for the rest of the week, and I'll monitor the build cycle time chart to look for large changes to the average build times.

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The builds are slightly longer, but are finishing within existing timeouts, so I'll close this.

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