It would be good if commit messages could be more descriptive in the future.
I agree we need to improve this!
This sounds like a bug in various canisters
Yes relying on error strings, that are intended for humans, is very fragile. But the fact that people rely on this points to an issue in the current HTTPS outcalls API, specifically that the current API makes it very hard to pay only for what you use (you need to specify the expected response size in advance with max_response_bytes). As a follow-up, we will revisit the API and see how to improve it so that people don’t need to do hacky workarounds anymore.