That's only half of it.

$ perl -v | grep 'This is'
This is perl 5, version 40, subversion 0 (v5.40.0) built for x86_64-li
+nux-thread-multi

$ perl -e'use feature qw( try ); try { } finally { }'
try/catch/finally is experimental at -e line 1.
syntax error at -e line 1, near "} finally"
Execution of -e aborted due to compilation errors.
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