[perl #128712] [LTA] quote colon form in identifier lacks line number

[via RT]

# New Ticket Created by  Wenzel Peppmeyer 
# Please include the string:  [perl #128712]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=128712 >


my $i = 42; my $foo:bar«$i»;
# OUTPUT:
#===SORRY!===
#QAST::Var with scope '' NYI
#
#shell returned 1