Problem: not testing on all currently supported Ubuntu LTSes
Problem: not testing on all currently supported Ubuntu LTSes

Solution: Enumerate them explicitly.

dmichiels/fractalide,sjmackenzie/fractalide,dmichiels/fractalide,fractalide/fractalide,fractalide/fractalide,fractalide/fractalide,sjmackenzie/fractalide,sjmackenzie/fractalide,dmichiels/fractalide