fix for kernelci errors?

I'm looking through the android kernel build failures using the new UI
(still a little painful since it is missing some features compared to
the old UI, but getting better). I have questions on 3 of our error
cases:

1. android16-6.12 (gcc tools building *+allmodconfig):
/bin/sh: 1: gawk: not found
make[2]: *** [scripts/Makefile.vmlinux:47: modules.builtin.ranges] Error 127
make[2]: *** Deleting file 'modules.builtin.ranges'
make[1]: *** [/tmp/kci/linux/Makefile:1227: vmlinux] Error 2
make: *** [Makefile:242: __sub-make] Error 2

Is gawk missing on your build machines? How do we fix this?

2. android15-6.6 (clang tools building *+allmodconfig):
drivers/i3c/master/svc-i3c-master.c:1100:29: error: variable 'reg' is
uninitialized when used here [-Werror,-Wuninitialized]

It looks like the stable kernels only have 1 clang build configured
(x86_64_defconfig). Would it be possible to add an allmodconfig build
using clang so we can compare our allmodconfig failures with the
stable kernel?

3. android-mainline

Is there a reason that there are no allmodconfig builds of
mainline.master? It would help us to know if we introduced an issue if
we could see the equivalent upstream build. It seems like it would
also benefit upstream to see those issues early.