perl-Gtk3-0.034-3.fc30 fails to build in F30 because a test fails:
t/floating-refs.t .............. ok
GLib-GIO-Message: 00:13:22.454: Using the 'memory' GSettings backend. Your settings will not be saved or shared with other applications.
Undefined subroutine &Gtk3::Gdk::PIXDATA_HEADER_LENGTH called at /builddir/build/BUILD/Gtk3-0.034/blib/lib/Gtk3.pm line 2119.
# Looks like your test exited with 255 just after 162.
Dubious, test returned 255 (wstat 65280, 0xff00)
Failed 71/233 subtests
A difference between passing and failing build root is at <https://apps.fedoraproject.org/koschei/build/5371427>.
This bug is probably caused by upgrading gdk-pixbuf2 from 2.36.12-2.fc29 to 2.38.0-2.fc30.
*** Bug 1675630 has been marked as a duplicate of this bug. ***
Upstream fix is
This is still broken in Fedora 29 (perl-Gtk3-0.034-3.fc29).
The following builds were made: perl-Gtk3-0.034-5.fc30 perl-Gtk3-0.034-6.fc30 perl-Gtk3-0.035-1.fc31 perl-Gtk3-0.035-2.fc31 perl-Gtk3-0.035-3.fc31
(In reply to Mohan Boddu from comment #4)
> The following builds were made: perl-Gtk3-0.034-5.fc30
> perl-Gtk3-0.034-6.fc30 perl-Gtk3-0.035-1.fc31 perl-Gtk3-0.035-2.fc31
(In reply to Petr Pisar from comment #3)
> This is still broken in Fedora 29 (perl-Gtk3-0.034-3.fc29).