[DRE-maint] Bug#747736: FTBFS: Test "ruby2.1" failed. Exiting.

[Christian Hofstaedtler]

Source: ruby-httpclient
Version: 2.3.3-2
Severity: serious
Justification: fails to build from source
User: debian-ruby at lists.debian.org
Usertags: ruby2.0-rm

Dear Maintainer,

During a rebuild of ruby-related packages your package failed to
build with these errors:

===================================================================
Running tests for ruby2.1 using debian/ruby-tests.rb...
Run options: 

# Running tests:

EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE....................EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE.....EEEEEE

Finished tests in 0.045885s, 4010.0123 tests/s, 2745.9867 assertions/s.

  1) Error:
HTTPAccess2::TestClient#test_agent_name:
Errno::EADDRINUSE: Address already in use - listen(2)
    /usr/lib/ruby/2.1.0/socket.rb:406:in `listen'
    /usr/lib/ruby/2.1.0/socket.rb:406:in `block in tcp_server_sockets_port0'
===================================================================

Please note that the default ruby recently has been switched to 2.1
in sid. If your package doesn't already do this, please switch to
the ruby(-all)(-dev) metapackages and `dh_ruby --print-supported`
for detecting the ruby to build for.
(Also, if everything goes according to plan, this is the last ruby
transition for jessie.)

About the test rebuild: this build was done in a rather standard
sbuild/schroot setup, on an amd64 host where PID1 is provided by
systemd, and options passed to sbuild were:
  DEB_BUILD_OPTIONS=parallel=12

Please find the full build log attached.

Thanks,
  -ch
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