[DRE-maint] Bug#870744: berkshelf-api FTBFS with ruby-buff-extensions 2.0.0-1

[Adrian Bunk]

Source: berkshelf-api
Version: 2.2.0-1
Severity: serious
Tags: buster sid

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/berkshelf-api.html

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GEM_PATH=debian/berkshelf-api/usr/share/rubygems-integration/all:/var/lib/gems/2.3.0:/usr/lib/x86_64-linux-gnu/rubygems-integration/2.3.0:/usr/share/rubygems-integration/2.3.0:/usr/share/rubygems-integration/all ruby2.3 -e gem\ \"berkshelf-api\"
/usr/lib/ruby/2.3.0/rubygems/dependency.rb:319:in `to_specs': Could not find 'buff-extensions' (~> 1.0) - did find: [buff-extensions-2.0.0] (Gem::LoadError)
...