/usr/lib/x86_64-linux-gnu/ is in libdevel-declare-perl 0.006017-1+deb8u1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/perl5/
/usr/lib/x86_64-linux-gnu/perl5/5.20/
/usr/lib/x86_64-linux-gnu/perl5/5.20/Devel/
/usr/lib/x86_64-linux-gnu/perl5/5.20/Devel/Declare.pm
/usr/lib/x86_64-linux-gnu/perl5/5.20/Devel/Declare/
/usr/lib/x86_64-linux-gnu/perl5/5.20/Devel/Declare/MethodInstaller/
/usr/lib/x86_64-linux-gnu/perl5/5.20/Devel/Declare/MethodInstaller/Simple.pm
/usr/lib/x86_64-linux-gnu/perl5/5.20/Devel/Declare/Context/
/usr/lib/x86_64-linux-gnu/perl5/5.20/Devel/Declare/Context/Simple.pm
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/Devel/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/Devel/Declare/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/Devel/Declare/Declare.so