/usr/share/lintian/overrides/ruby-eventmachine is in ruby-eventmachine 1.0.3-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | # It is dual licensed under Ruby's license or GPL
# http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=591979
ruby-eventmachine: possible-gpl-code-linked-with-openssl
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