[DRE-maint] Bug#996138: ruby-bio: FTBFS with ruby3.0: ERROR: Test "ruby3.0" failed: Error: test_target(Bio::TestSiRNAPair): NoMethodError: undefined method `subseq' for "cuuucggugcggacguaaggagu":String

[Antonio Terceiro]

Source: ruby-bio
Version: 2.0.1-2
Severity: serious
Justification: FTBFS
Tags: bookworm sid ftbfs
User: debian-ruby at lists.debian.org
Usertags: ruby3.0

Hi,

We are about to enable building against ruby3.0 on unstable. During a test
rebuild, ruby-bio was found to fail to build in that situation.

To reproduce this locally, you need to install ruby-all-dev from experimental
on an unstable system or build chroot.

Relevant part (hopefully):
> Error: test_target(Bio::TestSiRNAPair): NoMethodError: undefined method `subseq' for "cuuucggugcggacguaaggagu":String
> /<<PKGBUILDDIR>>/lib/bio/util/sirna.rb:151:in `block in design'
> /<<PKGBUILDDIR>>/lib/bio/sequence/common.rb:182:in `block in window_search'
> /<<PKGBUILDDIR>>/lib/bio/sequence/common.rb:181:in `step'
> /<<PKGBUILDDIR>>/lib/bio/sequence/common.rb:181:in `window_search'
> /<<PKGBUILDDIR>>/lib/bio/util/sirna.rb:150:in `design'
> /<<PKGBUILDDIR>>/test/unit/bio/util/test_sirna.rb:110:in `setup'
> ===============================================================================
> ...............................................................................
> ...............................................................................
> ...............................................................................
> ...............................................................................
> ...............................................................................
> ........................................................
> Finished in 45.320577728 seconds.
> -------------------------------------------------------------------------------
> 3772 tests, 21042 assertions, 1 failures, 38 errors, 0 pendings, 2 omissions, 0 notifications
> 98.9655% passed
> -------------------------------------------------------------------------------
> 83.23 tests/s, 464.29 assertions/s
> ERROR: Test "ruby3.0" failed: 


The full build log is available at
https://people.debian.org/~kanashiro/ruby3.0/round2/builds/3/ruby-bio/ruby-bio_2.0.1-2+rebuild1633375682_amd64.build.txt
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