Error: failed processing order: account history load failure: getUser error: context deadline exeeded
I am unable to imagine a case where an error string repeated itself. On a loop, an error could repeat, but those show as a numerical count value or as separate logs.
Typically there is only one possible code path if you can identify both ends.
Do1:...Do10, which then DoX,DoY,DoZ and one of those last 3 failed.
Do you really need Do1 to Do10 to be annotated to know that DoY failed when called from Do1? I find:
Do1:DoZ failed for reason bar
Just as useful and a lot shorter than: Do1: failed:Do2:failed...Do9 failed:Do10:failed:DoZ failed for reason bar
It is effectively a stack trace stored in strings, why not just embed a proper stack trace to all your errors if that is what you want?
Your concern with having a stack trace of calls seems a hypothetical concern to me but perhaps we just work on different kinds of software. I think though you should allow that for some people annotating each error just isn't that useful, even if it is useful for you.