Although Jenkins is supposed to be able to decode ANSI escape sequences
for terminal colors, it doesn't do so in all cases and when it does, it
doesn't seem to produce the right result for output from `emerge`.
* Base
* Crossdev
* Build
The *Base* layer is bootstrapped from a regular Gentoo stage 3
environment. The *Build* layer is the primary artifact, and is
"squashed" into a single layer when built.