Re: [PATCH 1/5] test-lib: use individual lsan dir for --stress runs

> When storing output in test-results/, we usually give each numbered run
> in a --stress set its own output file. But we don't do that for storing
> LSan logs, so something like:
>
>   ./t0003-attributes.sh --stress
>
> will have many scripts simultaneously creating, writing to, and deleting
> the test-results/t0003-attributes.leak directory. This can cause logs
> from one run to be attributed to another, spurious failures when
> creation and deletion race, and so on.
>
> This has always been broken, but nobody noticed because it's rare to do
> a --stress run with LSan (since the point is for the code to run quickly
> many times in order to hit races). But if you're trying to find a race
> in the leak sanitizing code, it makes sense to use these together.