There are two reasons for this:
1. Apple is about to drop support for this target. Zig will keep support
but move it to a lower tier - one that does not require continuous CI
testing. Support for this target will be maintained by the enthusiasm
of contributors but will not block other bug fixes and enhancements.
2. This is our only non-self-hosted action runner. We are migrating away
from GitHub soon at which point this runner will no longer be
available.
GitHub is apparently very bad at arithmetic and so will cancel jobs that pass
the 5 hours mark, even if they're nowhere near the 6 hours timeout. So add an
hour to assist GitHub in this very difficult task.
these are taking too long. let's use a different workflow for now until
these runs are not holding up the pipeline, then they can be
reintroduced on master branch
The idea is to have 2 runners per machine, since a lot of time is spent building
stage3 and stage4, both of which are largely single-core affairs. This will make
the test steps take longer, however, so the timeouts have been bumped a bit, and
max RSS for the test step has been lowered from 64G to 32G to prevent OOM.
Finally, we now only run a single ReleaseSafe job on PRs; Debug and Release jobs
are limited to pushes.
The addition of FreeBSD and NetBSD targets to the test matrix in #24013 seems to
be causing timeouts under load. We might need to exclude some of those from CI,
but start by bumping the timeout so we can get a sense of how much more time is
actually needed.
We don't seem to be getting non-deterministic hangs since 4f3b59f, and e28b402
cut the run times significantly on top of that. Runs now seem to take around 1-2
hours, so the default timeout should be plenty.
Apple has already dropped support for macOS 12.
GitHub Actions is dropping macOS 12 support now.
The Zig project is also dropping macOS 12 support now.
This commit also bumps default minimum macos version to 13.
Apple has already dropped support for macOS 11.
GitHub Actions is dropping macOS 11 support now.
The Zig project is also dropping macOS 11 support now.
This is the main way this feature is supposed to work:
1. you discover that a test started failing at some point
but a misconfiguration in the CI script didn't catch that
causing a bunch of false negative (ie false green) CIs
over time
2. you fix the script and now want to figure out when the
test started failing
3. you want to rebuild older commits, potentially only on specific
targets, but with the new fixed CI script that correctly
catches failures
This is what this commit enables
