I thought it was Perl warnings but that code doesn’t fire
That's because of order of operations. local $SIG{__WARN__} = sub {... is a command that executes to modify the warnings handler until you exit the current scope. But if you look at your script, it doesn't get called until immediately before you exit. Try moving that code to before the command that issues the warning.

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

In reply to Re: Capturing warnings from DBD:PG by kennethk
in thread Capturing warnings from DBD:PG by HeadScratcher

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