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$ perl -e'use 5.10;'
Perl v5.100.0 required (did you mean v5.10.0?)--this is only v5.12.2, 
+stopped at -e line 1.
BEGIN failed--compilation aborted at -e line 1.

$ perl -M5.014 -e1
Perl v5.14.0 required--this is only v5.12.2, stopped.
BEGIN failed--compilation aborted.