make check hangs in docker (ubuntu 12.04, 14.04)

[GoogleCodeExporter]

What steps will reproduce the problem?
1. On ubuntu14.04, docker run -i -t ubuntu:12.04 /bin/bash (or 14.04)
2. checkout google-breakpad (r1434), and then configure; make; make check
3. Test fails with hannged processes, including linux_dumper_unittest_helper, 
linux_client_unittest

What is the expected output? What do you see instead?

expected: make check passes test. (It passes all tests on host machine)
what I see: fails at "src/client/linux/linux_client_unittest"



What version of the product are you using? On what operating system?

google-breakpad r1434, Ubuntu 14.04 (x86-64) + docker 1.0.1 + (in docker, 
ubuntu 12.04, 14.04).

Please provide any additional information below.



Please use labels and text to provide additional information.

Original issue reported on code.google.com by [email protected] on 19 Mar 2015 at 6:54