Hey all, apparently the use of Encode::FB_CROAK in Email::MIME has been triggering leaks on Encode::decode failures. It seems like it's been a problem for several years, at least: https://rt.cpan.org/Ticket/Display.html?id=139622 I finally found it because I started porting a wonky malloc debugger to Perl: https://80x24.org/mwrap-perl.git/