The uuu tool is needed to flash the eMMC on the Librem 5 devkit. When using the -O2 flag, running uuu aborts with an invalid pointer.
Since this deb comes from the Librem 5 team, a merge request is open to fix the issue. This task is being opened to track the effort of getting the fixed deb into PureOS.
See https://source.puri.sm/Librem5/mfgtools/merge_requests/2