ImageBuilder for ipq806x failing on some packages

[slh]

21.02.0-rc1 Opkg: incompatible with the architectures configured

You are mixing things a bit. Your observation is from master snapshots, not from 21.02. You are possibly seeing the error today because iwinfo was updated earlier today. And you need to have the phase1 buildbot kernels & target packages in sync with the general packages from the phase2 packages buildbot, which needs the new SDK from the phase1. Likely luci still expects an older iwinfo stuff, while your imagebuilder already has the new version. You need to wait until phase2 packages have been…

Same underlying story here, you'll have to wait (or build from source yourself).