[DRE-maint] Bug#945232: ruby-benchmark-suite fails to build with ruby-benchmark-ips 2.7 in experimental

[Pirate Praveen]

Package: ruby-benchmark-suite
Version: 1.0.0+git.20130122.5bded6-2
Severity: important

This package fails to build with ruby-benchmark-ips 2.7 in experimental 
and blocking its upload to unstable.

/usr/bin/ruby2.5 /usr/bin/gem2deb-test-runner

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

RUBYLIB=/<<PKGBUILDDIR>>/debian/ruby-benchmark-suite/usr/lib/ruby/vendor_ruby:. 
GEM_PATH=/var/lib/gems/2.5.0:/usr/lib/ruby/gems/2.5.0:/usr/share/rubygems-integration/2.5.0:/usr/share/rubygems-integration/all:/usr/lib/x86_64-linux-gnu/rubygems-integration/2.5.0 
ruby2.5 debian/ruby-tests.rb
/usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in 
`require': cannot load such file -- benchmark/helpers (LoadError)
 from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in 
`require'
 from 
/<<PKGBUILDDIR>>/debian/ruby-benchmark-suite/usr/lib/ruby/vendor_ruby/benchmark_suite.rb:3:in 
`<top (required)>'
 from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in 
`require'
 from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in 
`require'
 from /<<PKGBUILDDIR>>/test/test_benchmark_suite.rb:2:in `<top 
(required)>'
 from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in 
`require'
 from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in 
`require'
 from debian/ruby-tests.rb:2:in `<main>'
ERROR: Test "ruby2.5" failed. Exiting.