I ran into the same problem, when trying to install cpan Moose, it says that 
Installing the dependencies failed: Installed version (1.55) of List::
+Util is not in range '1.56'

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Trying to install List::Util with cpanm List::Util seems to work, it show the message 
Successfully installed Scalar-List-Utils-1.60 (upgraded from 1.55)

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But when then trying to run cpan Moose it complains again about error 
Installing the dependencies failed: Installed version (1.55) of List::
+Util is not in range '1.56'

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Obviously, cpanm did not upgrade List::Utils. but installed it in a different directory. When I check the installed packages, I get this 
$ cpan -l |grep List::Util
List::Util      1.55
List::Util::XS  1.55
Module::CoreList::Utils 5.20210520
List::Util      1.55
List::Util::XS  1.55
Module::CoreList::Utils 5.20210520
List::Util      1.55
List::Util::XS  1.55
site_perl::List::Util   1.60
site_perl::List::Util::XS       1.60
List::Util      1.60
List::Util::XS  1.60
List::Util      1.60
List::Util::XS  1.60
List::Util      1.55
List::Util::XS  1.55
Module::CoreList::Utils 5.20210520
List::Util      1.55
List::Util::XS  1.55

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It is not clear to me how to ensure that the newer version should used.

In reply to Re^2: Upgrading XS module to later version by Anonymous Monk
in thread Upgrading XS module to later version by clerew

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