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crates.io Postmortem: Broken Crate Downloads
(blog.rust-lang.org)
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this post was submitted on 28 Jul 2023
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That basically is the same as saying "next time we will write correct code" in your postmortem, which I don't think is very useful. It's much more useful to say "our code is not structured in a way that makes testing easy" and "our smoke tests should cover the thing that broke." That gives you something actionable to work on that will actually prevent this from happening in the future. Otherwise, you'll end up writing essentially the same postmortem over and over again, each time saying "we will write correct code."
False dichotomy much!
See this postmortem from Cloudflare as an example.
Under "What went wrong", point 1 and 3:
And on what needed to done, point 4
See! Plenty of procedural talk in that postmortem. Plenty of corporate talk too. But you have to mention that a bad backtracking regex was used. And you have to mention that using regexes with no complexity guarantees was glaringly wrong. To not have done so would have been silly. To not even come close to mentioning those things beyond the specific error in that specific regex, and you wouldn't have been taken seriously.