With Python 3.7 asynchronous tests randomly fail
with "RuntimeError: Event loop is closed" during shutdown.
Backtrace of the error includes `SafeChildWatcher` calls.
Python 3.8 has replaced `SafeChildWatcher`
with a new `ThreadedChildWatcher` by default [1]
as a bugfix for
"asyncio.create_subprocess_exec() only works with main event loop" bug [2].
Python 3.7 scheduled end of life is 2023-06-27
according to <https://devguide.python.org/versions/>.
[1] https://github.com/python/cpython/pull/14344
[2] https://bugs.python.org/issue35621
With this, all the builds happen in parallel in 3-6 minutes,
and then python tests run for 8-9 minutes.
Before, it was 6-17 minutes for compilation,
then 19-31 minutes for python tests.
Compilation of the library and test binary was not parallelized,
and then python tests included async python tests
and deltachat-rpc-server binary compilation.
Now, deltachat-rpc-server compilation,
Rust testing and async python tests are separate jobs.
This way if flaky python tests fail,
it is possible to rerun them without having to rerun library compilation.
Python test jobs will redownload already built library artifact
and compile the bindings against it.
This adds more configuration to cargo-deny so that the output is not a
giant list of warnings hiding new entries. Instead the config now
lists the things that would emit warnings. It also adds -Dwarnings to
the CI job so that new warnings will be cleaned up: they can be added
to the config easily to fix the warnings.
scripts/update-provider-database.sh checks out the provider database
and updates data.rs file,
making it easier to update.
CI uses this script to check that checked in data.rs
corresponds to the provider database repository.
actions-rs/clippy-check runs clippy with --message-format=json option
and converts the output into annotations.
This makes clippy output unreadable, it is JSON
and you cannot quickly find the line number to fix.
Annotations in the code review view look nice,
but on large PRs they are less usable because you need
to scroll the whole page to find all the annotations.
This setting is true by default and causes
Windows build to cancel when Linux fails
due to flaky test and vice versa.
Cancelled test then has to be restarted
from scratch even though it was not going
to fail.
Bumping MSRV from 1.61.0 to 1.63.0, because `arbitrary` crate requires
it and fuzzing crates depend on it, at least by default. We still use
1.64.0 as our default rust toolchain.
