buildman stops (crashed) on current master

Hi all,

CI stops by building aarch64 without notice, for reference:

https://source.denx.de/u-boot/custodians/u-boot-imx/-/jobs/332319

There is no error, just process is killed. It looks like it stops at xilinx_zynqmp_virt,

./tools/buildman/buildman -o /tmp -P -E -W aarch64but board can be built without issues.

If I build on my host (not in docker, anyway), it generally builds fine - but it crashes sometimes, too. On gitlab instance , it crashes. Issue does not seem that depends on merged patches, and introduces boards were already built successfully. Any hint ? I have also no idea what I should look as what I see is just

"usr/bin/bash: line 104: 24 Killed ./tools/buildman/buildman -o /tmp -P -E -W aarch64"

Regards, Stefano