Rawhide kernel-6.15 randomly shutting system down

I'm seeing:

     kernel-6.15.0-0.rc0.20250327git1a9239bb4253.5.fc43.x86_64

randomly shutting down the system, anywhere from about 15 minutes to an
hour after boot.

Looking at the log file, I see that the log file claims the power switch
was hit.  I can state categorically the power switch was not hit.  Here
are two instances from today:

Apr 01 12:01:00 zorac CROND[1494]: (root) CMD (run-parts /etc/cron.hourly)
Apr 01 12:01:00 zorac run-parts[1497]: (/etc/cron.hourly) starting 0anacron
Apr 01 12:01:00 zorac run-parts[1503]: (/etc/cron.hourly) finished 0anacron
Apr 01 12:01:00 zorac CROND[1493]: (root) CMDEND (run-parts
/etc/cron.hourly)
Apr 01 12:22:28 zorac systemd-logind[821]: Power key pressed short.
Apr 01 12:22:28 zorac systemd-logind[821]: Powering off...
Apr 01 12:22:28 zorac systemd-logind[821]: System is powering down.

**************

Apr 01 15:30:21 zorac audit[1]: SERVICE_START pid=1 uid=0
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0
msg='unit=systemd-tmpfiles-clean comm="systemd"
exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Apr 01 15:30:21 zorac audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295
ses=4294967295 subj=system_u:system_r:init_t:s0
msg='unit=systemd-tmpfiles-clean comm="systemd"
exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Apr 01 15:31:37 zorac systemd-logind[847]: Power key pressed short.
Apr 01 15:31:37 zorac systemd-logind[847]: Powering off...
Apr 01 15:31:37 zorac systemd-logind[847]: System is powering down.

This is not happening with previous kernels.  I booted into:

    kernel-6.14.0-0.rc7.20250321gitb3ee1e460951.60.fc43.x86_64

and will see if it lasts overnight (it did last night).  This looks like
a kernel issue with 6.15 but no clue how to proceed.

Hardware:

Dell Optiplex 3040 1 x 6th Gen Intel(R) Core(TM) i3-6100T CPU @ 3.20GHz
Intel Corporation HD Graphics 530 (rev 06)

This is my only native system running Rawhide.  I've booted a pair of
VMs running Rawhide to see if it impacts VMs also (but the host is
Fedora 41).

--
Ian Laurie
FAS: nixuser | IRC: nixuser
TZ: Australia/Sydney

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