Many CI reprodibility runs failing with FTBFS on 2nd build

[Peter Blackman]

Hi,

Looks to me like a systemic issue
with CI reproducibility.

2nd runs are failing across the board with logs like

I: Adding a custom variable just for the fun of it...
I: Changing /bin/sh to bash
'/bin/sh' -> '/bin/bash'
lrwxrwxrwx 1 root root 9 Jun  7 00:21 /bin/sh -> /bin/bash
I: Setting pbuilder2's login shell to /bin/bash
/tmp/hooks/D01_modify_environment: 29: usermod: not found

Regards,
Peter B