[DRE-maint] Bug#991606: ruby-libxml: test failures with libxml2 2.9.12

[Pirate Praveen]

Control: forwarded -1 https://github.com/xml4r/libxml-ruby/issues/172

On Wed, 28 Jul 2021 15:35:58 +0200 Mattia Rizzolo <mattia at debian.org> 
wrote:
 > Source: ruby-libxml
 > Version:  3.2.0-1
 > Severity: serious

Do we keep serious severity for failure only in experimental? Don't we 
wait till libxml2 2.9.12 hits unstable to raise severity?

 > Tags: sid bookworm
 >
 > Dear maintainer,
 >
 > running autopkgtest against libxml2/2.9.12 (as currently found in
 > experimental) fails:
 > 
https://ci.debian.net/data/autopkgtest/unstable/amd64/r/ruby-libxml/13882963/log.gz


Reported upstream here https://github.com/xml4r/libxml-ruby/issues/172