Comment 46 for bug 1916485

Before I change the status of this bug, I would like to report my findings here.

I am testing things on a Bionic s390x machine with everything up-to-date:

# apt policy systemd
systemd:
  Installed: 237-3ubuntu10.46
...
# apt policy containerd
containerd:
  Installed: 1.4.4-0ubuntu1~18.04.2
...
# apt policy docker.io
docker.io:
  Installed: 20.10.2-0ubuntu1~18.04.2
...
# apt policy runc
runc:
  Installed: 1.0.0~rc93-0ubuntu1~18.04.1
...

Following the reproduction steps listed in the Description section still fail for me:

# systemd-nspawn
Spawning container h on /root/h.
Press ^] three times within 1s to kill container.
# bash -c 'test -x /usr/bin/gpg || echo Fail'
Fail

When I'm in a hirsute Docker container, it also fails:

$ docker run -it --rm ubuntu:hirsute
root@78506947b11f:/# bash -c 'test -x /usr/bin/gpg || echo Fail'
Fail

This is impacting the build of the 21.04 OCI images on s390x (amd64, arm64 and ppc64el succeed).

I'm still not sure what's causing this, nor why this is happening only on s390x. I will post more details when I have them.