[DRE-maint] Bug#921901: ruby-voight-kampff: FTBFS (expected: < 0.002, got: 0.002076509001199156)

[Santiago Vila]

Package: src:ruby-voight-kampff
Version: 1.1.3-2
Severity: serious
Tags: ftbfs

Dear maintainer:

I tried to build this package in buster but it failed:

--------------------------------------------------------------------------------
[...]
 debian/rules build-indep
dh build-indep --buildsystem=ruby --with ruby
   dh_update_autotools_config -i -O--buildsystem=ruby
   dh_auto_configure -i -O--buildsystem=ruby
	dh_ruby --configure
   dh_auto_build -i -O--buildsystem=ruby
	dh_ruby --build
   dh_ruby --build
   dh_auto_test -i -O--buildsystem=ruby
	dh_ruby --test
 fakeroot debian/rules binary-indep
dh binary-indep --buildsystem=ruby --with ruby
   dh_testroot -i -O--buildsystem=ruby
   dh_prep -i -O--buildsystem=ruby

[... snipped ...]

│ Install Rubygems integration metadata                                        │
└──────────────────────────────────────────────────────────────────────────────┘

generating gemspec at /<<PKGBUILDDIR>>/debian/ruby-voight-kampff/usr/share/rubygems-integration/all/specifications/voight_kampff-1.1.3.gemspec
/usr/bin/ruby2.5 /usr/bin/gem2deb-test-runner

┌──────────────────────────────────────────────────────────────────────────────┐
│ Checking Rubygems dependency resolution on ruby2.5                           │
└──────────────────────────────────────────────────────────────────────────────┘

GEM_PATH=debian/ruby-voight-kampff/usr/share/rubygems-integration/all:/var/lib/gems/2.5.0:/usr/lib/x86_64-linux-gnu/rubygems-integration/2.5.0:/usr/share/rubygems-integration/2.5.0:/usr/share/rubygems-integration/all ruby2.5 -e gem\ \"voight_kampff\"

┌──────────────────────────────────────────────────────────────────────────────┐
│ Run tests for ruby2.5 from debian/ruby-tests.rake                            │
└──────────────────────────────────────────────────────────────────────────────┘

RUBYLIB=/<<PKGBUILDDIR>>/debian/ruby-voight-kampff/usr/lib/ruby/vendor_ruby:. GEM_PATH=debian/ruby-voight-kampff/usr/share/rubygems-integration/all:/var/lib/gems/2.5.0:/usr/lib/x86_64-linux-gnu/rubygems-integration/2.5.0:/usr/share/rubygems-integration/2.5.0:/usr/share/rubygems-integration/all ruby2.5 -S rake -f debian/ruby-tests.rake
rspec
.................................F..........

Failures:

  1) VoightKampff::Test after the first run is fast
     Failure/Error: expect(Benchmark.realtime { 20.times { VoightKampff::Test.new('anything').bot? } }).to be < 0.002

       expected: < 0.002
            got:   0.002076509001199156
     # ./spec/lib/voight_kampff/test_spec.rb:33:in `block (3 levels) in <top (required)>'

Finished in 0.27072 seconds (files took 3.02 seconds to load)
44 examples, 1 failure

Failed examples:

rspec ./spec/lib/voight_kampff/test_spec.rb:32 # VoightKampff::Test after the first run is fast

rake aborted!
Command failed with status (1): [rspec...]
/<<PKGBUILDDIR>>/debian/ruby-tests.rake:4:in `block in <top (required)>'
Tasks: TOP => default
(See full trace by running task with --trace)
ERROR: Test "ruby2.5" failed. Exiting.
dh_auto_install: dh_ruby --install /<<PKGBUILDDIR>>/debian/ruby-voight-kampff returned exit code 1
make: *** [debian/rules:6: binary-indep] Error 1
dpkg-buildpackage: error: fakeroot debian/rules binary-indep subprocess returned exit status 2
--------------------------------------------------------------------------------

(The above is just how the build ends and not necessarily the most relevant part)

The build was made in my autobuilder with "dpkg-buildpackage -A"
and it also fails here:

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/ruby-voight-kampff.html

where you can get a full build log if you need it.

If this is really a bug in one of the build-depends, please use reassign and affects,
so that this is still visible in the BTS web page for this package.

Thanks.