$b = check { exists $a[1] } { }, 'array element: exists';
is $b, 1, 'scalar: array element: exists correctly';
-$b = check { delete $a[1] } { get => 1, free => 1 }, 'array element: delete';
+$b = check { delete $a[1] } { get => 1, free => ($] > 5.008005 ? 1 : 0) }, 'array element: delete';
is $b, 6, 'scalar: array element: delete correctly';
check { $a[1] = 4 } { }, 'array element: set after delete';