2016-01-18T15:02:54.310113Z ubuntu-core-launcher /apps/myapp.sideload/IKUNOdLKKUYe/bin/znc: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by /apps/znc.sideload/IKUNOdLKKUYe/bin/znc)