The ebuild in summary is currently forcing users to use serial make (-j1, no extra job tasks). This seems not to be needed. The ebuild was modified to use -j8 on a truly 8-core SMP system and didn't fail the build, you should either check if it's a particular USE flag to cause the problem, or drop -j1 and leave the user to decide how many jobs to use. I want to remember you that with modern multicore systems, forcing serial make is going to waste a lot of time and resources for users.. Thanks, Diego
Reassigning to maintainer-needed since zaheerm has left Gentoo, bug #68473.
Fixed in 0.3.15-r1. Thanks for the report and please reopen if it's still not fixed for you.