[Buildbot] #3198: Tests fail while building Buildbot package for CentOS 6.6

[Buildbot trac]

#3198: Tests fail while building Buildbot package for CentOS 6.6
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Reporter:  sa2ajj  |       Owner:
    Type:  defect  |      Status:  new
Priority:  major   |   Milestone:  0.8.x
 Version:  0.8.10  |  Resolution:
Keywords:          |
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Comment (by sa2ajj):

 The problem is that `sys.executable` turns to be empty.

 While trying to "fix" the problem (GH:1539), I found that there're many
 more tests that use `sys.executable` and they did not fail.

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Ticket URL: <http://trac.buildbot.net/ticket/3198#comment:1>
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