coroutine 'KernelManager._async_start_kernel' was never awaited

[benjamincburns]

When testing pawamoy/markdown-exec/#70 under python 3.14, I get warnings that cause tests to fail when filterwarnings = error in my pytest.ini. The errors are raised because I'm using BlockingKernelManager, which proxies synchronous calls to async methods, and doesn't appear to await them.

[davidbrochart]

Do you see this only on python 3.14? It may be something we'll hit when we test that version, but I don't think we currently do.

[benjamincburns]

Yes, it was only under 3.14 - I was a bit daft and didn't realise it was still prerelease. Probably safe to close this as you'll likely encounter when you begin testing against it.