[Reproducible-builds] Bug#794170: FTBFS: let 'value' cannot override a method in Minitest::Spec. Please use another name. (ArgumentError)

[Chris West (Faux)]

Source: ruby-enumerize
Version: 0.11.0-1
Severity: serious
Tags: sid stretch
Justification: fails to build from source
User: reproducible-builds at lists.alioth.debian.org
Usertags: ftbfs

Dear Maintainer,

The package fails to build:

/usr/lib/ruby/vendor_ruby/minitest/spec.rb:242:in `let': let 'value' cannot override a method in Minitest::Spec. Please use another name. (ArgumentError)
	from /tmp/buildd/ruby-enumerize-0.11.0/test/value_test.rb:6:in `block in <top (required)>'
	from /usr/lib/ruby/vendor_ruby/minitest/spec.rb:83:in `class_eval'
	from /usr/lib/ruby/vendor_ruby/minitest/spec.rb:83:in `describe'
	from /tmp/buildd/ruby-enumerize-0.11.0/test/value_test.rb:4:in `<top (required)>'
	from /usr/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
	from /usr/lib/ruby/vendor_ruby/active_support/dependencies.rb:247:in `block in require'
	from /usr/lib/ruby/vendor_ruby/active_support/dependencies.rb:232:in `load_dependency'
	from /usr/lib/ruby/vendor_ruby/active_support/dependencies.rb:247:in `require'
	from /usr/lib/ruby/vendor_ruby/rake/rake_test_loader.rb:15:in `block in <main>'
	from /usr/lib/ruby/vendor_ruby/rake/rake_test_loader.rb:4:in `select'
	from /usr/lib/ruby/vendor_ruby/rake/rake_test_loader.rb:4:in `<main>'
rake aborted!

Full build log:
https://reproducible.debian.net/rb-pkg/unstable/amd64/ruby-enumerize.html

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.19.0-23-generic (SMP w/8 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)