busybox

GNU mkdir:

$ umask 000
$ mkdir a
$ ls -ld a
drwxrwxrwx 2 jeffrey jeffrey 4096 Feb 11 22:11 a

uutils mkdir:

$ umask 000
$ ./target/debug/mkdir a
$ ls -ld a
drwxr-xr-x 2 jeffrey jeffrey 4096 Feb 11 22:11 a

Describe the bug
the bzimage package can't unpack kernels compress with xz. This is because when I wrote it I was not sure how to find
the compressed part and used a simple minded search.

To Reproduce
create a bzImage but enable XZ compression in the kernel (yep, it's still called a bzimage)
use the kexec command with debug and note you see this:
2022/02/02 21:13:15 Failed to unpa

Current test code coverage is pretty low (about 13.56%): https://codecov.io/gh/mesalock-linux/mesabox/tree/master

Our target coverage is around 80%.