[tor-bugs] #29586 [Core Tor/Tor]: Intermittent test failures in relay/close_circ_rephist

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#29586: Intermittent test failures in relay/close_circ_rephist
------------------------------+--------------------------------
     Reporter:  teor          |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  High          |  Milestone:  Tor: unspecified
    Component:  Core Tor/Tor  |    Version:  Tor: 0.3.5.2-alpha
     Severity:  Normal        |   Keywords:  tor-ci, tor-test
Actual Points:                |  Parent ID:
       Points:  1             |   Reviewer:
      Sponsor:                |
------------------------------+--------------------------------
 I observed this failure in 1/10 tests when testing #29541 on commit:
 {{{
 commit 5614960e94 (HEAD, tor-github/pr/723/merge)
 Merge: 69238ca2da 065e7da8e6
 }}}

 Here is the test error:
 {{{
 relay/close_circ_rephist: [forking]
   FAIL ../src/test/test_relay.c:127: assert(find_largest_max(write_array)
 OP_EQ 2*(get_cell_network_size(nchan->wide_circ_ids)
 +TLS_PER_CELL_OVERHEAD)): 0 vs 1082
   [close_circ_rephist FAILED]
 }}}

 It looks like this test was introduced in #23512 for Sponsor Q.
 Is Sponsor Q still open?

 Is it an obvious fix?
 If not, let's see if it happens again.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29586>
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