Bug#1127718: redmine: Build-Depends: ruby-mail (< 2.9) but 2.9.0+dfsg1-1 is to be installed

[Adrian Bunk]

Source: redmine
Version: 6.0.6+ds-6
Severity: serious
Tags: ftbfs

The following packages have unmet dependencies:
 builddeps:redmine : Depends: ruby-mail (< 2.9) but 2.9.0+dfsg1-1 is to be 
installed