Unable to build podman on debian

[phemmer]

I've been using the rpms-openqa repo to build packages for debian bullseye using debbuild like described in this blog post. This was working up to version 4.6.2. Starting 4.7.0 I started getting build failures due to an md2man issue, which was fixed with commit 1d3d97a. However with that issue resolved, I'm still having build issues. Starting at 4.8.0 (when that md2man issue was fixed), I get a build failure that makes very little sense. I can go into the debbuild build environment, and run the same build command (that debbuild is running) by hand, and get the same failure:

# export GO111MODULE=off

# export GOPATH=$(pwd)/_build:$(pwd)

# go build -a -v -x -o bin/podman github.com/containers/podman/cmd/podman
...
packagefile github.com/containers/podman/vendor/github.com/containers/image/v5/manifest=$WORK/b181/_pkg_.a
packagefile github.com/containers/podman/vendor/github.com/containers/image/v5/transports=$WORK/b235/_pkg_.a
packagefile github.com/containers/podman/vendor/github.com/containers/image/v5/types=$WORK/b165/_pkg_.a
packagefile github.com/containers/podman/vendor/github.com/hashicorp/go-multierror=$WORK/b215/_pkg_.a
packagefile github.com/containers/podman/vendor/github.com/opencontainers/go-digest=$WORK/b129/_pkg_.a
packagefile github.com/containers/podman/vendor/github.com/sirupsen/logrus=$WORK/b160/_pkg_.a
packagefile io=$WORK/b027/_pkg_.a
EOF
/usr/lib/go-1.19/pkg/tool/linux_amd64/compile -o $WORK/b642/_pkg_.a -trimpath "$WORK/b642=>" -p github.com/containers/podman/vendor/github.com/containers/common/pkg/supplemented -complete -buildid IYGBWurw_wIGaFpFf7ot/IYGBWurw_wIGaFpFf7ot -goversion go1.19.8 -c=4 -nolocalimports -importcfg $WORK/b642/importcfg -pack ./_build/src/github.com/containers/podman/vendor/github.com/containers/common/pkg/supplemented/errors.go ./_build/src/github.com/containers/podman/vendor/github.com/containers/common/pkg/supplemented/supplemented.go
/usr/lib/go-1.19/pkg/tool/linux_amd64/buildid -w $WORK/b642/_pkg_.a # internal
cp $WORK/b642/_pkg_.a /root/.cache/go-build/3c/3cf4558a64ea48b1f1e5e1242af6aefb8d2cad6e5009e3edf1757366bc6b87dd-d # internal

# echo $?
2

^{^ version 4.9.0}

That's it. I get no more explanation of the failure than that. The cp succeeded fine as I can see the file in the destination path. There's something else that's failing that is not shown.

Any ideas what might be failing? Or is there a more appropriate place to ask?