Test failure with perl 5.21.x and non-English locale

[eserte]

A sample fail report: http://www.cpantesters.org/cpan/report/7ed24a94-ea04-11e4-9c74-6970e0bfc7aa

perl 5.21.x changed the handling of $!: previously the outer locale environment was used for the stringified values, but with 5.21.x one has to explicitely say use locale to get localized $! messages:

$ env LC_ALL=de_DE.UTF-8 perl5.20.2  -E '$! = 1; say $!'
Die Operation ist nicht erlaubt
$ env LC_ALL=de_DE.UTF-8 perl5.21.11 -E '$! = 1; say $!'
Operation not permitted
$ env LC_ALL=de_DE.UTF-8 perl5.21.11 -E '$! = 1; use locale; say $!'
Die Operation ist nicht erlaubt