Bug#962318: libmojolicious-perl: build fails on IPv6-only buildds

[Adrian Bunk]

Source: libmojolicious-perl
Version: 8.52+dfsg-1
Severity: serious
Tags: ftbfs

https://buildd.debian.org/status/logs.php?pkg=libmojolicious-perl&ver=8.52%2Bdfsg-1

...
Can't create listen socket: Address family for hostname not supported at /<<PKGBUILDDIR>>/blib/lib/Mojo/IOLoop.pm line 123.
# Tests were run but no plan was declared and done_testing() was not seen.
...
Failed 39/103 test programs. 0/6415 subtests failed.
make[2]: *** [Makefile:1393: test_dynamic] Error 22


See #962019 as example of a similar problem in another package.