debuginfod-find stderr may contain diagnostics; look at stdout only #3381
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Test by setting $DEBUGINFOD_PROGRESS=1 or $DEBUGINFOD_VERBOSE=1
before invoking dlv. A "no such file or directory" dlv error results the first time,
even though debuginfod-find succeeded. If rerun (and thus the file is found in
the debuginfod client cache), diagnostics may not be printed, so dlv may work.