A quick look at its Makefile.PL shows two things. First, it uses "Module::Install" via a use inc::Module::Install; line. And, second, near the end, a call to auto_install. Reading the docs on Module::Install shows that "[t]he use of auto_install is strongly discouraged in any distribution to be uploaded to the CPAN, as the use of it violates the normal CPAN client to toolchain communication protocol." That seems to me to mean that it's probably a bug: the author of JSON::Any is using a feature in a way unintended by the author.

Simply removing that line from the Makefile.PL will eliminate this behaviour, though whatever dependency it's trying to suck in won't be met and you'll need to install those first.