[DRE-maint] Bug#765678: ruby-rack: FTBFS - rake aborted!

[Michael Tautschnig]

Package: ruby-rack
Version: 1.5.2-2
Severity: serious
Usertags: goto-cc

During a rebuild of all Debian packages in a clean sid chroot (using cowbuilder
and pbuilder) the build failed with the following error.

[...]
  Entering dh_ruby --install
Rewriting shebang line of /srv/jenkins-slave/workspace/sid-goto-cc-ruby-rack/ruby-rack-1.5.2/debian/ruby-rack/usr/bin/rackup
Running tests for ruby2.1 using debian/ruby-tests.rake ...
/usr/bin/ruby2.1 /usr/bin/bacon -I./lib:./test -w -a -q -t '^(?!Rack::Adapter|Rack::Session::Memcache|Rack::Server|Rack::Handler)'
/usr/lib/ruby/vendor_ruby/bacon.rb:221: warning: shadowing outer local variable - args
/usr/lib/ruby/vendor_ruby/memcache.rb:303: warning: assigned but unused variable - key_count
/usr/lib/ruby/vendor_ruby/memcache.rb:812: warning: assigned but unused variable - key
/usr/lib/ruby/vendor_ruby/memcache.rb:24: warning: assigned but unused variable - e
/usr/lib/ruby/vendor_ruby/continuum_native.rb:38: warning: assigned but unused variable - e
/srv/jenkins-slave/workspace/sid-goto-cc-ruby-rack/ruby-rack-1.5.2/test/spec_webrick.rb:6:in `<top (required)>': uninitialized constant Rack::Handler::WEBrick (NameError)
  from /usr/bin/bacon:116:in `load'
  from /usr/bin/bacon:116:in `block in <main>'
  from /usr/bin/bacon:115:in `each'
  from /usr/bin/bacon:115:in `<main>'
/srv/jenkins-slave/workspace/sid-goto-cc-ruby-rack/ruby-rack-1.5.2/test/spec_webrick.rb:6:in `<top (required)>': uninitialized constant Rack::Handler::WEBrick (NameError)
  from /usr/bin/bacon:116:in `load'
  from /usr/bin/bacon:116:in `block in <main>'
  from /usr/bin/bacon:115:in `each'
  from /usr/bin/bacon:115:in `<main>'
.........................................................................................................................................................................................................................
Finished in 0.339649703 seconds.

217 tests, 722 assertions, 0 failures, 0 errors
rake aborted!
Command failed with status (1): [/usr/bin/ruby2.1 /usr/bin/bacon -I./lib:./...]
/srv/jenkins-slave/workspace/sid-goto-cc-ruby-rack/ruby-rack-1.5.2/debian/ruby-tests.rake:6:in `block in <top (required)>'
-e:1:in `<main>'
Tasks: TOP => default
(See full trace by running task with --trace)
ERROR: Test "ruby2.1" failed. Exiting.
dh_auto_install: dh_ruby --install /srv/jenkins-slave/workspace/sid-goto-cc-ruby-rack/ruby-rack-1.5.2/debian/ruby-rack returned exit code 1
debian/rules:15: recipe for target 'binary' failed
make: *** [binary] Error 1


The full build log is attached; please do let me know if the problem is
unreproducible, in which case I shall try to investigate further.

Best,
Michael
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