Hi,

phpunit 11 is out and is now available in experimental. During a test rebuild,
libphp-swiftmailer was found to fail to build with this new phpunit version.

To reproduce this locally, you need to install phpunit from experimental on an
unstable system or build chroot.

Relevant part (hopefully):


The full build log is available at
http://people.ubuntu.com/~athos-ribeiro/rebuilds/phpunit11/0/libphp-swiftmailer/libphp-swiftmailer_6.3.0-5+rebuild1714364733_amd64-2024-04-29T04:25:34Z.build