With the recent kmod upgrade (in testing), it is easy to make a system unbootable with a custom kernel.
* Build a kernel using 'make tar-pkg'.
* Copy it to the target machine.
* cd / && tar xvfm <package>
* Now /lib is overwritten and the system is borked.
Using a rescue disc, the system can be recovered, but I just bricked a machine 500kms away.
Of course, this situation could have been avoided if I had used 'tar xvfmh', but old habits die hard...
Yes, but a compilation failure is much easier to fix.