resque/resque — pull request #959 by larrylv (2013-04-19 16:45:25+00:00)
Title: The output of executed command may contain invalid utf-8 byte.

* On my local machine, `test/legacy/worker_test.rb` test will fail
because in `worker_pids returns pids` test, `ps -A -o pid,command`
command result contains invalid byte sequence in UTF-8.
And an error will be raised when spliting an invalid UTF-8 stirng.