Description of problem:
Package pygrib fails to build from source in Fedora Rawhide.

Version-Release number of selected component (if applicable):
2.1.5-3.fc40

Steps to Reproduce:
koji build --scratch f41 pygrib-2.1.5-3.fc40.src.rpm

Additional info:
This package is tracked by Koschei. See:
https://koschei.fedoraproject.org/package/pygrib

Reproducible: Always

Actual Results:  
File "/builddir/build/BUILD/pygrib-2.1.5-build/pygrib-2.1.5-tmp-test/test/test.py", line 237, in __main__.test
Failed example:
    for grb in grbs: print(grb)
Expected:
    1:Total precipitation:kg m-2 (accum):lambert:surface:level 0:fcst time 15-30 mins (accum):from 201804100000
Got:
    1:Total precipitation:kg m-2 (accum):lambert:surface:level 0:fcst time 15m-30m mins (accum):from 201804100000
Trying:
    str(grb.packingType)
Expecting:
    'grid_simple'
ok
Trying:
    grbs.close()
Expecting nothing
ok
1 item had no tests:
    __main__
**********************************************************************
1 item had failures:
   1 of 110 in __main__.test