[tor-bugs] #29693 [Core Tor/Tor]: Decrease probability of stochastic failures in test-slow

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#29693: Decrease probability of stochastic failures in test-slow
----------------------------------------+----------------------------------
 Reporter:  teor                        |          Owner:  asn
     Type:  defect                      |         Status:  assigned
 Priority:  High                        |      Milestone:  Tor:
                                        |  0.4.0.x-final
Component:  Core Tor/Tor                |        Version:  Tor:
                                        |  0.4.0.1-alpha
 Severity:  Normal                      |     Resolution:
 Keywords:  tor-ci, tor-test, 040-must  |  Actual Points:
Parent ID:                              |         Points:  0.5
 Reviewer:                              |        Sponsor:  Sponsor2-must
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Comment (by teor):

 This bug caused #28636 to fail:
 {{{
 slow/prob_distr/stochastic_weibull: [forking] fail Weibull sampler
   FAIL src/test/test_prob_distr.c:1419: assert(ok)
 NOTE: This is a stochastic test, and we expect it to fail from
 time to time, with some low probability. If you see it fail more
 than one trial in 100, though, please tell us.
 Seed: D954C0E889C484D1BF3BB1D895E726F1
   [stochastic_weibull FAILED]
 1/20 TESTS FAILED. (0 skipped)
 }}}
 https://travis-ci.org/torproject/tor/jobs/509213576#L5738

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29693#comment:9>
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