[Reproducible-builds] Bug#794142: FTBFS: test_unterm_y(Racc::TestRaccCommand): NameError: uninitialized constant Racc::TestRaccCommand::MiniTest

[Chris West (Faux)]

Source: racc
Version: 1.4.9-2
Severity: serious
Tags: sid stretch
Justification: fails to build from source (but built successfully in the past)
User: reproducible-builds at lists.alioth.debian.org
Usertags: ftbfs

Dear Maintainer,

The package fails to build:

RUBYLIB=/tmp/buildd/racc-1.4.9/debian/racc/usr/lib/ruby/vendor_ruby:. ruby2.1 -ryaml -e YAML.load_file\(\"debian/ruby-test-files.yaml\"\).each\ \{\ \|f\|\ require\ f\ \}
Loaded suite -e
Started
..................E
===============================================================================
Error: test_norule_y(Racc::TestRaccCommand): NameError: uninitialized constant Racc::TestRaccCommand::MiniTest
/tmp/buildd/racc-1.4.9/test/test_racc_command.rb:144:in `test_norule_y'
     141:     end
     142: 
     143:     def test_norule_y
  => 144:       assert_raises(MiniTest::Assertion) {
     145:         assert_compile 'norule.y'
     146:       }
     147:     end
===============================================================================

Full build log:
https://reproducible.debian.net/rb-pkg/unstable/amd64/racc.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)