Bug#814826: phpunit build-depends on php5-xdebug (not built anymore)

[Matthias Klose]

Package: src:phpunit
Version: 5.1.3-1
Severity: serious
Tags: sid stretch
phpunit build-depends on php5-xdebug (not built anymore), and the new php-xdebug 
doesn't provide php5-xdebug anymore.