/usr/lib/debug/.build-id/ is in libcephfs1-dbg 10.1.2-0ubuntu1.
This file is owned by root:root, with mode 0o755.
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    /usr/lib/debug/.build-id/90/
    
        
    
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    /usr/lib/debug/.build-id/90/bf6441056ac0369b60739e4a226d98a9390228.debug
    
 | application/x-sharedlib | root:root | 0o644 | 33.1 MB |