test_internal_generate_combining_table fails with Python 3.7 in openSUSE package build

[mcepl]

[  101s] FAIL: Test that the combining table we generate is equal to or a subset of what's in the current table
[  101s] ----------------------------------------------------------------------
[  101s] Traceback (most recent call last):
[  101s]   File "/home/abuild/rpmbuild/BUILD/kitchen-1.2.5/kitchen3/tests/test_text_display.py", line 43, in test_internal_generate_combining_table
[  101s]     tools.assert_true(display._interval_bisearch(interval[0], old_table))
[  101s] AssertionError: False is not true
[  101s] 
[  101s] ----------------------------------------------------------------------

Complete log is attached.