The bug report describes how they reuse a flag for new code that triggered old code. "CI" would generally help keeping things tidy and transparent. It would be

The bug report describes how they reuse a flag for new code that triggered old code. "CI" would generally help keeping things tidy and transparent. It would be easier to find out what branches or flags or parameters already exist, which ones are not relevant any more; someone could rename them with a prefix "OLD_" or otherwise clean up, so that you typically pick from a list of options instead of setting a flag by accidentially copying it from one script to the other. It is also easier to have error visualization plugins, or to look around previous deployments or test runs and get a pretty good idea if any new errors have shown up, even if you haven't analyzed the old ones.