As near as I can tell, since the move to python3, gtester-report gets the following error when processing the results of the qemu-testsuite package  build:

[ 3157s]   File "/usr/bin/gtester-report", line 78, in html_indent_string
[ 3157s]     for i in range (0, (n + 1) / 2):
[ 3157s] TypeError: 'float' object cannot be interpreted as an integer

See, for example the build results of qemu-testsuite in Factory here: https://build.opensuse.org/package/live_build_log/openSUSE:Factory/qemu-testsuite/standard/x86_64

This failure began independent of any changes to the qemu / qemu-testsuite package, and seems related to the switch to python3.