[Buildbot] #3408: building documentation with Sphinx v1.3.4 generates warning "unknown option: -p"

[Buildbot trac]

#3408: building documentation with Sphinx v1.3.4 generates warning "unknown
option: -p"
-------------------+------------------------
Reporter:  rutsky  |       Owner:
    Type:  defect  |      Status:  assigned
Priority:  major   |   Milestone:  undecided
 Version:  master  |  Resolution:
Keywords:  simple  |
-------------------+------------------------

Comment (by rutsky):

 Looks like this was Sphinx bug, with Sphinx 1.4.* this issue is not
 reproduced.

 PR that unpins Sphinx version:
 https://github.com/buildbot/buildbot/pull/2147

--
Ticket URL: <http://trac.buildbot.net/ticket/3408#comment:6>
Buildbot <http://buildbot.net/>
Buildbot: build/test automation