Docker is defaulting to using BuildKit for building images since version
23.0 (2023-02-01), which is not compatible with this script. The script
was fishing the hash of the intermediate build container in which the
build has failed, in order to run the sha256sum in that image, however
with BuildKit there are no longer any intermediate build containers,
which breaks the script.
The legacy builder is supposedly getting removed in a future version of
Docker, which is why we embrace BuildKit instead of reverting to the
legacy builder via DOCKER_BUILDKIT=0:
$ DOCKER_BUILDKIT=0 docker build ...
DEPRECATED: The legacy builder is deprecated and will be removed in a
future release. BuildKit is currently disabled; enable it
by removing the DOCKER_BUILDKIT=0 environment-variable.
While DOCKER_BUILDKIT=1 is unnecessary on Docker >= 23.0, it's needed
for anyone running older Docker, so it makes sense to have it in for
now, while everyone transitions.
Also added a whole bunch of logging that I needed while debugging the
issue. The solution in the end is that bootstrap needs to resolve IPs,
and getaddrinfo fails in the browser. Most of the time we bootstrap
against IPs anyway, so trying to parse as IP address first will shortcut
that.
* Use-after-free because we free network before dht in one case.
* Various unchecked allocs in tests (not so important).
* We used to not check whether ping arrays were actually allocated in DHT.
* `ping_kill` and `ping_array_kill` used to crash when passing NULL.
Also:
* Added an assert in all public API functions to ensure tox isn't NULL.
The error message you get from that is a bit nicer than "Segmentation
fault" when clients (or our tests) do things wrong.
* Decreased the sleep time in iterate_all_wait from 20ms to 5ms.
Everything seems to still work with 5ms, and this greatly decreases
the amount of time spent per test run, making oomer run much faster.
