`vulkan_encode_available_at` and `vulkan_encode_caps` were gated on bare
`target_os = "linux"`, but the second returns `vulkan_video::VulkanEncodeCaps`
and both reference that module — which only exists under the feature. Every
CALL SITE was already correctly gated, so nothing pointed at them; the two
definitions alone were enough to fail the build.
That is CI's default-feature line (`cargo clippy --workspace --all-targets`),
so this was going to be caught — it was caught on a Fedora 44 box first.
`cursor_blend_capable`'s `ten_bit` goes unused in the featureless arm for the
same reason, which `-D warnings` also rejects.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
enricobuehlerandClaude Opus 5
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