Major Description
In a few ASAN builds, update_scan_delta_compact-test fails with the message:
update_scan_delta_compact-test.cc:253] Check failed: _s.ok() Bad status: IO error: Some errors occurred
A nearby warning complains about an RPC timeout, which may point to a stressed execution environment. Regardless, it's not entirely obvious whether that's the only cause of failure given the generic error message.