I just noticed how a test that should be skipped in the ASAN configuration in qtbase, was not being skipped in the nightly health check:

This nightly health check has this log for building qtbase in the ASAN configuration.
Notice how configure reports:

agent:2024/03/27 22:21:40 build.go:404:   Sanitizers:
agent:2024/03/27 22:21:40 build.go:404:     Addresses ............................ no

This is the opposite of a usual qtbase integration.

EDIT:
I only see one difference in the configure line, and that is actually in the cmake command that configure generates:

• The properly sanitized build has '-DFEATURE_sanitize_address=ON'
• The nightly health check has '-DINPUT_sanitize_address=yes' which is bogus and does not work. In fact configure prints in the end:

  Manually-specified variables were not used by the project: INPUT_sanitize_address

My guess is that this has to do with the configure script being executed on the qt5 repository vs the qtbase repository.