Excerpt from build log:

Failed tests:
    - python: test_composite.TestSolutionSerialization.test_yaml_outunits1
    - python: test_composite.TestSolutionSerialization.test_yaml_outunits2
    - python: test_composite.TestSolutionSerialization.test_yaml_simple
    - python: test_composite.TestSolutionSerialization.test_yaml_surface_adjacent
    - python: test_composite.TestSolutionSerialization.test_yaml_surface_explicit
    - python: test_convert.ck2yamlTest.test_extra
    - python: test_convert.ck2yamlTest.test_sri_zero

see https://download.copr.fedorainfracloud.org/results/fuller/cantera-test/fedora-rawhide-s390x/03246662-cantera/builder-live.log.gz

N.B. this is a preliminary report; package is approved, but not yet built on koji (other than scratch)

%%%%%%%%%%%%

==================================== ERRORS ====================================
_____________ ERROR at setup of TestModels.test_load_thermo_models _____________

cls = <class 'cantera.test.test_composite.TestModels'>

    @classmethod
    def setUpClass(cls):
        utilities.CanteraTest.setUpClass()
        cls.yml_file = cls.test_data_path / "thermo-models.yaml"
>       cls.yml = utilities.load_yaml(cls.yml_file)

../../build/python/cantera/test/test_composite.py:18: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../../build/python/cantera/test/utilities.py:35: in load_yaml
    return yaml_.load(stream)
/usr/lib/python3.10/site-packages/ruamel/yaml/main.py:341: in load
    return constructor.get_single_data()
/usr/lib/python3.10/site-packages/ruamel/yaml/constructor.py:111: in get_single_data
    node = self.composer.get_single_node()
ruamel.yaml.clib/_ruamel_yaml.pyx:701: in _ruamel_yaml.CParser.get_single_node
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

>   ???
E   ruamel.yaml.reader.ReaderError: unacceptable character #x0000: control characters are not allowed
E     in "/builddir/build/BUILD/cantera-main/build/python/cantera/test/data/thermo-models.yaml", position 16384

ruamel.yaml.clib/_ruamel_yaml.pyx:904: ReaderError
___________ ERROR at setup of TestModels.test_restore_thermo_models ____________

cls = <class 'cantera.test.test_composite.TestModels'>

    @classmethod
    def setUpClass(cls):
        utilities.CanteraTest.setUpClass()
        cls.yml_file = cls.test_data_path / "thermo-models.yaml"
>       cls.yml = utilities.load_yaml(cls.yml_file)

../../build/python/cantera/test/test_composite.py:18: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../../build/python/cantera/test/utilities.py:35: in load_yaml
    return yaml_.load(stream)
/usr/lib/python3.10/site-packages/ruamel/yaml/main.py:341: in load
    return constructor.get_single_data()
/usr/lib/python3.10/site-packages/ruamel/yaml/constructor.py:111: in get_single_data
    node = self.composer.get_single_node()
ruamel.yaml.clib/_ruamel_yaml.pyx:701: in _ruamel_yaml.CParser.get_single_node
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

>   ???
E   ruamel.yaml.reader.ReaderError: unacceptable character #x0000: control characters are not allowed
E     in "/builddir/build/BUILD/cantera-main/build/python/cantera/test/data/thermo-models.yaml", position 16384

ruamel.yaml.clib/_ruamel_yaml.pyx:904: ReaderError
=================================== FAILURES ===================================
________________ TestSolutionSerialization.test_yaml_outunits1 _________________

self = <cantera.test.test_composite.TestSolutionSerialization testMethod=test_yaml_outunits1>

    def test_yaml_outunits1(self):
        gas = ct.Solution('h2o2.yaml')
        gas.TPX = 500, ct.one_atm, 'H2: 1.0, O2: 1.0'
        gas.equilibrate('HP')
        gas.TP = 1500, ct.one_atm
        units = {'length': 'cm', 'quantity': 'mol', 'energy': 'cal'}
        gas.write_yaml('h2o2-generated.yaml', units=units)
>       generated = utilities.load_yaml("h2o2-generated.yaml")

../../build/python/cantera/test/test_composite.py:680: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../../build/python/cantera/test/utilities.py:35: in load_yaml
    return yaml_.load(stream)
/usr/lib/python3.10/site-packages/ruamel/yaml/main.py:341: in load
    return constructor.get_single_data()
/usr/lib/python3.10/site-packages/ruamel/yaml/constructor.py:111: in get_single_data
    node = self.composer.get_single_node()
ruamel.yaml.clib/_ruamel_yaml.pyx:701: in _ruamel_yaml.CParser.get_single_node
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

>   ???
E   ruamel.yaml.reader.ReaderError: unacceptable character #x0000: control characters are not allowed
E     in "h2o2-generated.yaml", position 9160

ruamel.yaml.clib/_ruamel_yaml.pyx:904: ReaderError
________________ TestSolutionSerialization.test_yaml_outunits2 _________________

self = <cantera.test.test_composite.TestSolutionSerialization testMethod=test_yaml_outunits2>

    def test_yaml_outunits2(self):
        gas = ct.Solution('h2o2.yaml')
        gas.TPX = 500, ct.one_atm, 'H2: 1.0, O2: 1.0'
        gas.equilibrate('HP')
        gas.TP = 1500, ct.one_atm
        units = {'length': 'cm', 'quantity': 'mol', 'energy': 'cal'}
        system = ct.UnitSystem(units)
        gas.write_yaml('h2o2-generated.yaml', units=system)
>       generated = utilities.load_yaml("h2o2-generated.yaml")

../../build/python/cantera/test/test_composite.py:705: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../../build/python/cantera/test/utilities.py:35: in load_yaml
    return yaml_.load(stream)
/usr/lib/python3.10/site-packages/ruamel/yaml/main.py:341: in load
    return constructor.get_single_data()
/usr/lib/python3.10/site-packages/ruamel/yaml/constructor.py:111: in get_single_data
    node = self.composer.get_single_node()
ruamel.yaml.clib/_ruamel_yaml.pyx:701: in _ruamel_yaml.CParser.get_single_node
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

>   ???
E   ruamel.yaml.reader.ReaderError: unacceptable character #x0000: control characters are not allowed
E     in "h2o2-generated.yaml", position 9160

ruamel.yaml.clib/_ruamel_yaml.pyx:904: ReaderError
__________________ TestSolutionSerialization.test_yaml_simple __________________

self = <cantera.test.test_composite.TestSolutionSerialization testMethod=test_yaml_simple>

    def test_yaml_simple(self):
        gas = ct.Solution('h2o2.yaml')
        gas.TPX = 500, ct.one_atm, 'H2: 1.0, O2: 1.0'
        gas.equilibrate('HP')
        gas.TP = 1500, ct.one_atm
        gas.write_yaml('h2o2-generated.yaml')
>       generated = utilities.load_yaml("h2o2-generated.yaml")

../../build/python/cantera/test/test_composite.py:656: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../../build/python/cantera/test/utilities.py:35: in load_yaml
    return yaml_.load(stream)
/usr/lib/python3.10/site-packages/ruamel/yaml/main.py:341: in load
    return constructor.get_single_data()
/usr/lib/python3.10/site-packages/ruamel/yaml/constructor.py:111: in get_single_data
    node = self.composer.get_single_node()
ruamel.yaml.clib/_ruamel_yaml.pyx:701: in _ruamel_yaml.CParser.get_single_node
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

>   ???
E   ruamel.yaml.reader.ReaderError: unacceptable character #x0097: invalid leading UTF-8 octet
E     in "h2o2-generated.yaml", position 9182

ruamel.yaml.clib/_ruamel_yaml.pyx:904: ReaderError
_____________ TestSolutionSerialization.test_yaml_surface_adjacent _____________

self = <cantera.test.test_composite.TestSolutionSerialization testMethod=test_yaml_surface_adjacent>

    def test_yaml_surface_adjacent(self):
        surf = ct.Interface("ptcombust.yaml", "Pt_surf")
        gas = surf.adjacent["gas"]
        gas.TPY = 900, ct.one_atm, np.ones(gas.n_species)
        surf.coverages = np.ones(surf.n_species)
        surf.write_yaml("ptcombust-generated.yaml")
>       self.check_ptcombust(gas, surf)

../../build/python/cantera/test/test_composite.py:750: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../../build/python/cantera/test/test_composite.py:722: in check_ptcombust
    generated = utilities.load_yaml("ptcombust-generated.yaml")
../../build/python/cantera/test/utilities.py:35: in load_yaml
    return yaml_.load(stream)
/usr/lib/python3.10/site-packages/ruamel/yaml/main.py:341: in load
    return constructor.get_single_data()
/usr/lib/python3.10/site-packages/ruamel/yaml/constructor.py:111: in get_single_data
    node = self.composer.get_single_node()
ruamel.yaml.clib/_ruamel_yaml.pyx:701: in _ruamel_yaml.CParser.get_single_node
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

>   ???
E   ruamel.yaml.reader.ReaderError: unacceptable character #x0000: control characters are not allowed
E     in "ptcombust-generated.yaml", position 16384

ruamel.yaml.clib/_ruamel_yaml.pyx:904: ReaderError
_____________ TestSolutionSerialization.test_yaml_surface_explicit _____________

self = <cantera.test.test_composite.TestSolutionSerialization testMethod=test_yaml_surface_explicit>

    def test_yaml_surface_explicit(self):
        gas = ct.Solution("ptcombust.yaml", "gas")
        surf = ct.Interface("ptcombust.yaml", "Pt_surf", [gas])
        gas.TPY = 900, ct.one_atm, np.ones(gas.n_species)
        surf.coverages = np.ones(surf.n_species)
        surf.write_yaml("ptcombust-generated.yaml")
>       self.check_ptcombust(gas, surf)

../../build/python/cantera/test/test_composite.py:742: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../../build/python/cantera/test/test_composite.py:722: in check_ptcombust
    generated = utilities.load_yaml("ptcombust-generated.yaml")
../../build/python/cantera/test/utilities.py:35: in load_yaml
    return yaml_.load(stream)
/usr/lib/python3.10/site-packages/ruamel/yaml/main.py:341: in load
    return constructor.get_single_data()
/usr/lib/python3.10/site-packages/ruamel/yaml/constructor.py:111: in get_single_data
    node = self.composer.get_single_node()
ruamel.yaml.clib/_ruamel_yaml.pyx:701: in _ruamel_yaml.CParser.get_single_node
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

>   ???
E   ruamel.yaml.reader.ReaderError: unacceptable character #x0000: control characters are not allowed
E     in "ptcombust-generated.yaml", position 16384

ruamel.yaml.clib/_ruamel_yaml.pyx:904: ReaderError
____________________________ ck2yamlTest.test_extra ____________________________

self = <cantera.test.test_convert.ck2yamlTest testMethod=test_extra>

    @utilities.slow_test
    def test_extra(self):
        output = self.convert("gri30.inp", thermo="gri30_thermo.dat",
                              transport="gri30_tran.dat", output="gri30_extra",
                              extra="extra.yaml")
    
>       yml = utilities.load_yaml(output)

../../build/python/cantera/test/test_convert.py:487: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../../build/python/cantera/test/utilities.py:35: in load_yaml
    return yaml_.load(stream)
/usr/lib/python3.10/site-packages/ruamel/yaml/main.py:341: in load
    return constructor.get_single_data()
/usr/lib/python3.10/site-packages/ruamel/yaml/constructor.py:111: in get_single_data
    node = self.composer.get_single_node()
ruamel.yaml.clib/_ruamel_yaml.pyx:701: in _ruamel_yaml.CParser.get_single_node
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

>   ???
E   ruamel.yaml.reader.ReaderError: unacceptable character #x0000: control characters are not allowed
E     in "/builddir/build/BUILD/cantera-main/test/work/python/gri30_extra-from-ck.yaml", position 16384

ruamel.yaml.clib/_ruamel_yaml.pyx:904: ReaderError
__________________________ ck2yamlTest.test_sri_zero ___________________________

self = <cantera.test.test_convert.ck2yamlTest testMethod=test_sri_zero>

    def test_sri_zero(self):
        # This test tests it can convert the SRI parameters when D or E equal to 0
        output = self.convert('sri_convert_test.txt')
>       mech = utilities.load_yaml(output)

../../build/python/cantera/test/test_convert.py:497: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../../build/python/cantera/test/utilities.py:35: in load_yaml
    return yaml_.load(stream)
/usr/lib/python3.10/site-packages/ruamel/yaml/main.py:341: in load
    return constructor.get_single_data()
/usr/lib/python3.10/site-packages/ruamel/yaml/constructor.py:111: in get_single_data
    node = self.composer.get_single_node()
ruamel.yaml.clib/_ruamel_yaml.pyx:701: in _ruamel_yaml.CParser.get_single_node
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

>   ???
E   ruamel.yaml.reader.ReaderError: unacceptable character #x00ff: invalid leading UTF-8 octet
E     in "/builddir/build/BUILD/cantera-main/test/work/python/sri_convert_test-from-ck.yaml", position 1627

ruamel.yaml.clib/_ruamel_yaml.pyx:904: ReaderError