e.message == 'Unable to find matching strategy for someOther'

        when:
        schema.getMatchingStrategy(Attribute.of('picard', Flavor))

        then:
        e = thrown(IllegalArgumentException)
        e.message == 'Unable to find matching strategy for picard'
    }

    static class CustomCompatibilityRule implements AttributeCompatibilityRule<Flavor> {
        @Override

        ['java.home': "java-home",
         'java.version': "1.${version}.0_66",
         'java.vendor': "Hewlett-Packard Co.",
         'os.arch': "ia64",
         'java.vm.name': "Java HotSpot(TM) 64-Bit Server VM",
         'java.vm.version': "25.66-b17",
         'java.vm.vendor': "Hewlett-Packard Co.",
         'java.runtime.name': "Java(TM) SE Runtime Environment",
         'java.runtime.version': "1.${version}.0_66-b08"