Ruby's documentation generator `rdoc` maintains a file called `created.rid` which lists the time when each output file was generated. This seems to be used to support incremental documentation builds.

[[https://reproducible.debian.net/issues/timestamps_in_ruby_documentation_issue.html|Known affected packages]]

= Detection =

The file always has the name `created.rid`.

= Work-around =

There seems to be no need to ship this file. It seems to be only useful for upstream development.