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Global symbol "$key" requires explicit package name (did you forget to
+ declare "my $key"?) at - line 11.
Global symbol "$value" requires explicit package name (did you forget 
+to declare "my $value"?) at - line 11.
Global symbol "$key" requires explicit package name (did you forget to
+ declare "my $key"?) at - line 12.
Global symbol "$value" requires explicit package name (did you forget 
+to declare "my $value"?) at - line 12.
Execution of - aborted due to compilation errors.

#! /usr/bin/perl
use v5.12;
...
dino => 1
fred => 3
pebbles => 1