FWIW we fixed most of the problems in the scipy/imexam/s390x area on Ubuntu by building scipy with gfortran-7 rather than gfortran-8 on s390x. AFAIK we haven't gotten around to working out what it is gfortran-8 is doing wrong yet.
- Bug#912150: imexam: FTBFS in s390x: AssertionError du... Mattia Rizzolo
- Bug#912150: Processed: Joining with the existing... Michael Hudson-Doyle
