Cannot enter any containers: usermod: UID '1000' already exists

**Describe the bug** Somehow, suddenly, I can't enter any toolbox containers, which is a big problem as I sort of can't do any work. I think this started when I was fiddling with my Fedora 44 container. I entered it, and several tabs which were open in Fedora 43 containers immediately exited (that was weird). Then I tried a `dnf update` in it, but it hung on the ca-certificates %post. So I decided to delete and re-create it. After a few `toolbox rm fedora-toolbox-44`, `toolbox create fedora-toolbox-44`, `toolbox enter fedora-toolbox-44` cycles still gave me an old image, I realized I had to do `toolbox rmi fedora-toolbox:44` too. Fine. Now I had an up-to-date fedora-toolbox-44. But somewhere along the way I did `toolbox enter fedora-toolbox-43` on a different tab and it failed: ``` Error: usermod: UID '1000' already exists failed to modify user adamw with UID 1000: failed to invoke usermod(1) ``` That was worrying, but I figured a reboot would clear it (it usually seems to clear up weird toolbox/podman things). But now I've rebooted, I can't get into fedora-toolbox-43 *or* fedora-toolbox-44. Verbose logs look basically the same for both: ``` [adamw@omnibook ~]$ toolbox -v enter fedora-toolbox-44 DEBU Running as real user ID 1000 DEBU Resolved absolute path to the executable as /usr/bin/toolbox DEBU Running on a cgroups v2 host DEBU Looking up sub-GID and sub-UID ranges for user adamw DEBU TOOLBX_DELAY_ENTRY_POINT is DEBU TOOLBX_FAIL_ENTRY_POINT is DEBU TOOLBOX_PATH is /usr/bin/toolbox DEBU Migrating to newer Podman DEBU Toolbx config directory is /var/home/adamw/.config/toolbox DEBU Current Podman version is 5.7.1 DEBU Creating runtime directory /run/user/1000/toolbox DEBU Old Podman version is 5.7.1 DEBU Migration not needed: Podman version 5.7.1 is unchanged DEBU Setting up configuration DEBU Setting up configuration: file /var/home/adamw/.config/containers/toolbox.conf not found DEBU Resolving container and image names DEBU Container: '' DEBU Distribution (CLI): '' DEBU Image (CLI): '' DEBU Release (CLI): '' DEBU Resolved container and image names DEBU Container: 'fedora-toolbox-44' DEBU Image: 'fedora-toolbox:44' DEBU Release: '44' DEBU Resolving container and image names DEBU Container: 'fedora-toolbox-44' DEBU Distribution (CLI): '' DEBU Image (CLI): '' DEBU Release (CLI): '' DEBU Resolved container and image names DEBU Container: 'fedora-toolbox-44' DEBU Image: 'fedora-toolbox:44' DEBU Release: '44' DEBU Checking if container fedora-toolbox-44 exists DEBU Inspecting container fedora-toolbox-44 DEBU Entry point of container fedora-toolbox-44 is toolbox (PID=0) DEBU Inspecting mounts of container fedora-toolbox-44 DEBU Generating Container Device Interface for NVIDIA DEBU Generating Container Device Interface for NVIDIA: Management Library not found: could not load NVML library: libnvidia-ml.so.1: cannot open shared object file: No such file or directory DEBU Generating Container Device Interface for NVIDIA: not a Tegra system: /sys/devices/soc0/family file not found DEBU Generating Container Device Interface for NVIDIA: skipping DEBU Starting 'p11-kit server' with socket /run/user/1000/toolbox/pkcs11 DEBU Starting 'p11-kit server': socket /run/user/1000/toolbox/pkcs11 already exists DEBU Starting 'p11-kit server': skipping DEBU Starting container fedora-toolbox-44 DEBU Inspecting container fedora-toolbox-44 DEBU Entry point of container fedora-toolbox-44 is toolbox (PID=0) DEBU > Running as real user ID 0 DEBU > Resolved absolute path to the executable as /usr/bin/toolbox DEBU > TOOLBX_DELAY_ENTRY_POINT is DEBU > TOOLBX_FAIL_ENTRY_POINT is DEBU > TOOLBOX_PATH is /usr/bin/toolbox DEBU > Migrating to newer Podman DEBU > Migration not needed: running inside a container DEBU > Setting up configuration DEBU > Setting up configuration: file /etc/containers/toolbox.conf not found DEBU > Setting up configuration: file /root/.config/containers/toolbox.conf not found DEBU > Resolving container and image names DEBU > Container: '' DEBU > Distribution (CLI): '' DEBU > Image (CLI): '' DEBU > Release (CLI): '' DEBU > Resolved container and image names DEBU > Container: 'fedora-toolbox-44' DEBU > Image: 'fedora-toolbox:44' DEBU > Release: '44' DEBU > Creating /run/.toolboxenv DEBU > Path /run/host/etc exists DEBU > Resolved /etc/localtime to /run/host/usr/share/zoneinfo/America/Vancouver DEBU > Creating regular file /etc/machine-id DEBU > Binding /etc/machine-id to /run/host/etc/machine-id DEBU > Creating directory /run/systemd/journal DEBU > Binding /run/systemd/journal to /run/host/run/systemd/journal DEBU > Creating directory /run/systemd/resolve DEBU > Binding /run/systemd/resolve to /run/host/run/systemd/resolve DEBU > Creating directory /run/systemd/sessions DEBU > Binding /run/systemd/sessions to /run/host/run/systemd/sessions DEBU > Creating directory /run/systemd/system DEBU > Binding /run/systemd/system to /run/host/run/systemd/system DEBU > Creating directory /run/systemd/users DEBU > Binding /run/systemd/users to /run/host/run/systemd/users DEBU > Creating directory /run/udev/data DEBU > Binding /run/udev/data to /run/host/run/udev/data DEBU > Creating directory /run/udev/tags DEBU > Binding /run/udev/tags to /run/host/run/udev/tags DEBU > Creating directory /tmp DEBU > Binding /tmp to /run/host/tmp DEBU > Creating directory /var/lib/flatpak DEBU > Binding /var/lib/flatpak to /run/host/var/lib/flatpak DEBU > Creating directory /var/lib/systemd/coredump DEBU > Binding /var/lib/systemd/coredump to /run/host/var/lib/systemd/coredump DEBU > Creating directory /var/log/journal DEBU > Binding /var/log/journal to /run/host/var/log/journal DEBU > Creating directory /var/mnt DEBU > Binding /var/mnt to /run/host/var/mnt DEBU > Creating directory /sys/fs/selinux DEBU > Binding /sys/fs/selinux to /usr/share/empty DEBU > Preparing to redirect /home to /var/home DEBU > /var/home isn't a symbolic link DEBU > Redirecting /home to /var/home DEBU > Looking up group for sudo DEBU > Group for sudo is wheel DEBU > Modifying user adamw with UID 1000: DEBU > usermod DEBU > --append DEBU > --groups DEBU > wheel DEBU > --home DEBU > /var/home/adamw DEBU > --password DEBU > DEBU > --shell DEBU > /bin/bash DEBU > --uid DEBU > 1000 DEBU > adamw Error: usermod: UID '1000' already exists failed to modify user adamw with UID 1000: failed to invoke usermod(1) ``` **Steps how to reproduce the behaviour** Run `toolbox enter fedora-toolbox-43` or `toolbox enter fedora-toolbox-44` **Expected behaviour** A working toolbox **Actual behaviour** An error **Screenshots** Not needed, see output about **Output of `toolbox --version` (v0.0.90+)** `toolbox version 0.3` **Toolbx package info (`rpm -q toolbox`)** `toolbox-0.3-2.fc44.x86_64` **Output of `podman version`** ``` Client: Podman Engine Version: 5.7.1 API Version: 5.7.1 Go Version: go1.25.5 X:nodwarf5 Git Commit: f845d14e941889ba4c071f35233d09b29d363c75 Built: Tue Dec 9 16:00:00 2025 Build Origin: Fedora Project OS/Arch: linux/amd64 ``` **Podman package info (`rpm -q podman`)** `podman-5.7.1-1.fc44.x86_64` **Info about your OS** Fedora Silverblue Rawhide **Additional context** N/A (see above)