Update 2: elpy-promise-wait-should-return-early-for-resolved-promise fails 30% to 40% of the time in an schroot with Python 3.6.7rc1 as /usr/bin/python3. I changed the symlink to point to /usr/bin/python3.7 (Python 3.7.1rc1) and this test passed 100% of the time. I ran the test 50 times.
I believe python3.6/3.6.7~rc1-1 is at fault (released Thu, 27 Sep 2018 11:51:25 +0200), because this test passes with 3.6.6-4 (from Sat, 01 Sep 2018 03:05:25 +0200). This is the thing that changed in sid (after Sept 4th) leading to the failure of elpy-promise-wait-should-return-early-for-resolved-promise. I'm contacting #debian-python about how to proceed. Cheers, Nicholas
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