Open SYCL currently prints warnings and errors to stdout. These lines mix with any output the user decides to print as part of normal program execution, and any script that wants to ingest the output of an Open SYCL program must manually strip out any log lines first.

Even though logging can be disabled through HIPSYCL_DEBUG_LEVEL, I would suggest to write log output to stderr instead, so that warnings can be seen even while output is captured.