Anyone seeing `nixos-rebuild switch` kick you out to GDM and/or log GPF errors? specifically: `users.you.linger = true` set and unstable channel?

sometime in the last month or two I noticed switch now kicks me out to GDM screen. I finally had time to look today and I see there’s this line in my dmesg: Aug 13 20:48:00 myhost kernel: traps: systemd-logind[1040] general protection fault ip:75d9102bab86 sp:7ffc6e210c00 error:0 in libsyst> Anyone else already debugging this? I can share a lot more about my configuration but if this smells familiar/old-news, then it’s not urgent - I’ll just punt and subscribe there instead…