Geting sprintf "redundant arg" msg from a 5.22.0, but only 1 w/that version.

[L Walsh]

I am seeing, what I think is bug:

http://www.nntp.perl.org/group/perl.perl5.porters/2015/06/msg228888.html

But I am only seeing it from 1 5.22.0 client:
(http://www.cpantesters.org/cpan/report/7cbf1ee4-6c18-1014-b5bf-e4f7913d07a7)

Wasn't in 5.22.0 and not fixed until 5.22.1?

Why would I see it w/only 1 tester?