Run inside a VM (so HWID does not exist)


localhost ~ # crossystem
[...]
hwid                   = (error)
[...]
localhost ~ # echo $?
0
localhost ~ #
localhost ~ # crossystem hwid
localhost ~ # echo $?
1
localhost ~ #

In the latter case, crossystem doesn't print anything, it should print "(error)". In the former case, crossystem always returns 0 even if there were failures, return code should be non-zero in that case.