CI: kernel errors

[systemcrash]

Got a few errors from actions last night:

Error when evaluating 'strategy' for job 'check-kernel-patches'. openwrt/actions-shared-workflows/.github/workflows/kernel.yml@main (Line: 180, Col: 10): Matrix must define at least one vector


Error when evaluating 'strategy' for job 'build'. openwrt/actions-shared-workflows/.github/workflows/kernel.yml@main (Line: 158, Col: 10): Matrix must define at least one vector

[namiltd]

I have the same for target archs38 (https://github.com/openwrt/openwrt/actions/runs/10103589092)

Ping @Ansuel

[namiltd]

And today the error is gone, strange.

[namiltd]

Problem is back: https://github.com/openwrt/openwrt/actions/runs/10285549651

Build Kernel
Error when evaluating 'strategy' for job 'check-kernel-patches'. openwrt/actions-shared-workflows/.github/workflows/kernel.yml@main (Line: 180, Col: 10): Matrix must define at least one vector

Ping @Ansuel

[namiltd]

The problem occurs when FEATURES=source-only
However, this should not mean an error, but only skip compilation.