dub test fails to compile due to error in mysqlddbc.d

[Samael]

/usr/include/dmd/phobos/std/range/primitives.d(174,38): Deprecation: function std.typecons.Nullable!string.Nullable.get_ is deprecated - Implicit conversion with alias Nullable.get this will be removed after 2.096. Please use .get explicitly.
source/ddbc/drivers/mysqlddbc.d(1256,39): Error: cannot implicitly convert expression rs.getFetchSize() of type ulong to int
/usr/bin/dmd failed with exit code 1.