[Issue 24239] dlang.org tests on CircleCI run out of memory

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24239

--- Comment #1 from Dlang Bot <dlang-bot at dlang.rocks> ---
@tim-dlang created dlang/dmd pull request #15799 "Issue 24239 - dlang.org tests
on CircleCI run out of memory" mentioning this issue:

- Issue 24239 - dlang.org tests on CircleCI run out of memory

  Add variable BUILD_JOBS to posix.mak, which allows to set the number of
  jobs for build.d. This will be used by a separate pull request for
  dlang.org to manually set it, because the automatically calculated
  number of CPU cores is too high.

https://github.com/dlang/dmd/pull/15799

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