Bug#1142194: storebackup: the $USER env variable is not set under cron, which generates an error

Package: storebackup
Version: 3.5.2-2
Severity: minor

When storeBackup is called by cron (I have a file under /etc/cron.d/local-storebackup) the USER env var is not set, which gives rise to an error:

Use of uninitialized value $ENV{"USER"} in string eq at /usr/bin/storeBackup line 141.

For the rest, storeBackup works normally, which is why I have set this as a minor problem, but I suppose this could give problems in case of concurrent runs.

-- System Information:
Debian Release: forky/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'stable-security'), (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.19.6+deb14-amd64 (SMP w/24 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=C.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages storebackup depends on:
ii  bzip2  1.0.8-6+b2
ii  perl   5.40.1-8

Versions of packages storebackup recommends:
ii  perl [libio-compress-bzip2-perl]  5.40.1-8

storebackup suggests no packages.

-- no debconf information