Bug#1149823: scotch: FTBFS: 81% tests passed, 33 tests failed out of 171

[Drew Parsons]

Package: scotch
Followup-For: Bug #1149823
Control: tags -1 ftbfs

The error "Deprecated variable: schizo_proxy" is Bug#1148924,
outside scotch's control.

The error "Deprecated variable: rmaps_default_mapping_policy" can be
easily fixed in debian/rules. PRTE_MCA_rmaps_default_mapping_policy is
to be updated to PRTE_MCA_mapby

But then the error "mapping request contains an unrecognized qualifier"
I do not understand. The same variable PRTE_MCA_rmaps_default_mapping_policy
(or PRTE_MCA_mapby) is used in other packages with no
such problem. ":oversubscribe" is the correct syntax,
c.f. https://github.com/open-mpi/ompi/issues/8955#issuecomment-846272943

Running the test manually passes fine without this
"unrecognized qualifier" error.

I have no idea what to do with this error,
unless OMPI_MCA_rmaps_base_oversubscribe=true works as an alternative