It's not just one file. That was the last one it happened on. In that case,...
$ dir /sandbox/integration-testing/tests/qa/cpap/api_tests/genesis_api/k8s/test_k8s_localdisks.py
-rw-r--r-- 1 pbrightl pbrightl 6840 Nov 16 16:33 /sandbox/integration-testing/tests/qa/cpap/api_tests/genesis_api/k8s/test_k8s_localdisks.py
Hmm... OK, I think I've added something that may be interfering here. You may recall I do a lot of bash coding targeted at Ubuntu. So I configured my Build window to run Windows WSL Ubuntu. Hmm....
But this is a recent phenomena -- I've been running that for a while. I'll say, I haven't been actively doing things in the build window very much.