Emulator does not figure out process had died

When:

I let Droidium start emulator.

Given:

Emulator command fails, for instance when DISPLAY is not set.

Then:

Droidium waits up to emulator start time, then fails.

Expected:

Droidium will figure out command had failed - emulator actually outputs SDL init failure, reason is: No available video device and let user know what happened wrong.