Missing error under strict

[Pascal666]

Why am I not getting an error message for line 10?

#!/usr/bin/perl -W

use strict;
use warnings;

use feature 'say';

say 'one' until my $one = 1;

say $one;    ############# this is line 10

until (my $two = 2) {
    say 'two';
}

say $two;

Output:

Global symbol "$two" requires explicit package name at ./strict.pl lin
+e 16.
Execution of ./strict.pl aborted due to compilation errors.

Commenting out line 16 gives me:

Use of uninitialized value $one in say at ./strict.pl line 10.

This is perl 5, version 16, subversion 3 (v5.16.3) built for x86_64-linux-thread-multi