error: rmdir: Device or resource busy

[Fredrik Salomonsson]

Hello,

tried installing GuixSD 0.16. But hitting a cryptic error.

guix system init /mnt/etc/config.scm /mnt
--substitute-urls="http://berlin.guixsd.org http://mirror.hydra.gnu.org";
...
/gnu/store/sh9x3mhl5q60yxhl861kpk6vm70l3w81-bootloader-installer

initializing operating system under '/mnt'...
guix system: error: rmdir: Device or resource busy

This was working fine with 0.15.

Is there a way to get a better backtrace from system init? Or does anyone
know what the error might be?

Thanks

config.scm
Description: GuixSD config

-- 
s/Fred[re]+i[ck]+/Fredrik/g