Two tests in metricbeat/module/system/test_system.py:
test_coretest_core_with_cpu_ticks
fail on at least arm64 and s390x because the parser for /proc/cpuinfo only supports linux amd64 cpuinfo file format currently. It looks like the parser is not meant to handle other platforms currently.
Could the tests be skipped for non-amd64 platforms? Or maybe the tests could filter the proc/cpuinfo sourced fields on non-amd64? I can file an issue if that helps.