There was a build last month of shadow-utils that had a locking problem.
shadow-utils-4.15.0-10.el10
That was never released to the mirrors, but it was in a few composes.
So if you are/were grabbing our daily composes, it's possible that you might have gotten that package.
If you are using the default configurations and getting things from the mirrors, you wouldn't have seen it.

I am not seeing that error, and I'm currently on shadow-utils-4.15.0-9.el10
shadow-utils-4.15.0-11.el10 is going out with todays release to the mirrors.

Troy

On Sat, Feb 28, 2026 at 6:40 AM lejeczek via devel <devel@lists.centos.org> wrote:
Hi guys.

Is this an old problem's - from what I could find - new occurrence?
-> $ mock something centos-stream-10 ....
...
ERROR: Command failed:
 # useradd mockbuild -o -u 1000 -g 135 -N -d /builddir --prefix /devs/var/mock

past mentions are about incompatible/broken/different shadow-utils

Anybody sees this/similar?
many thanks, L.
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