aggregate_tests run_tests_c++_linux_tsan failure #9117
Description
seen in https://grpc-testing.appspot.com/job/gRPC_pull_requests_tsan_cpp/793/testReport/junit/(root)/aggregate_tests/run_tests_c___linux_tsan/ from #8879
copy of log in https://gist.github.com/apolcyn/d80b9e6bc4ca9bee477da43cfd064026