[DRE-maint] Bug#795047: ruby-powerpack: FTBFS: rspec3 port(?): 26 failures around ...to be_true

[Chris West (Faux)]

Source: ruby-powerpack
Version: 0.1.0-1
Severity: serious
Justification: fails to build from source
Tags: sid stretch
User: reproducible-builds at lists.alioth.debian.org
Usertags: ftbfs
X-Debbugs-CC: reproducible-builds at lists.alioth.debian.org

Dear Maintainer,

The package fails to build:

............FFFFFFFF..FFFFF.........FFFFFFFFFF......................................FFF...............

Failures:

  1) Enumerable#exactly with block returns true for exact number of matches
     Failure/Error: expect([1, 2, 3, 4].exactly?(2, &:even?)).to be_true
       expected true to respond to `true?` or perhaps you meant `be true` or `be_truthy`
     # ./spec/powerpack/enumerable/exactly_spec.rb:6:in `block (3 levels) in <top (required)>'

...

  25) String#blank? returns true for a string with only whitespace in it
      Failure/Error: expect('     '.blank?).to be_true
        expected true to respond to `true?` or perhaps you meant `be true` or `be_truthy`
      # ./spec/powerpack/string/blank_spec.rb:9:in `block (2 levels) in <top (required)>'

  26) String#blank? returns false for a string with non-whitespace chars in it
      Failure/Error: expect('   test'.blank?).to be_false
        expected false to respond to `false?` or perhaps you meant `be false` or `be_falsey`
      # ./spec/powerpack/string/blank_spec.rb:13:in `block (2 levels) in <top (required)>'


Full build log:
https://reproducible.debian.net/rb-pkg/unstable/amd64/ruby-powerpack.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_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)