s390x rawhide issues?

[Tom Callaway]

One of my packages (alienarena) fails to build in rawhide on s390x (and
only that arch), but the build log shows it never even starts. When I look
at the root log, I see this:

DEBUG util.py:585:  BUILDSTDERR: error: unpacking of archive failed on file
/builddir/build/SOURCES/alienarena-7.71.0-svn5638.tar.xz;5d41b327: cpio:
read failed - Inappropriate ioctl for device
DEBUG util.py:585:  BUILDSTDERR: error:
/builddir/build/originals/alienarena-7.71.0-3.fc31.src.rpm cannot be
installed

Is something unhappy on s390x on rawhide?

Koji build: https://koji.fedoraproject.org/koji/taskinfo?taskID=36706646

Thanks in advance,

Tom