I have never used File::Find, so I may be incorrect, but a brief reading through the POD of File::Find::Closures revealed a potential typo. In the synopsis, you have this:

my( $list_reporter, $wanted ) = find_by_name( qw(README) );
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But in the line immediately after the heading "The closure factories" you say this:

Each factory returns two closures. The first one is for find(), and the second one is the reporter.

It seems your example and your description are at odds.