/usr/share/lintian/overrides/librudecgi5v5 is in librudecgi5v5 5.0.0-1.1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | # G++5 ABI transition
librudecgi5v5: package-name-doesnt-match-sonames librudecgi5
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