tests/async/tioselectors.nim is newly flaky on OSX

[timotheecour]

tests/async/tioselectors.nim is newly flaky on OSX. There used to be problems with this test, but this one is different.

eg: https://dev.azure.com/nim-lang/Nim/_build/results?buildId=8623&view=logs&jobId=30931762-47c4-53b3-6a83-316eb5a6b9d7&j=30931762-47c4-53b3-6a83-316eb5a6b9d7&t=ba1696ab-ec7f-5f41-daf2-f41c151ab1ed from #14589

Current Output

2020-10-14T19:54:25.7653300Z �[1m�[31mFAIL: �[36mtests/async/tioselectors.nim C�[0m
2020-10-14T19:54:25.7654550Z �[1m�[36mTest "tests/async/tioselectors.nim" in category "async"�[0m
2020-10-14T19:54:25.7655600Z �[1m�[31mFailure: reExitcodesDiffer�[0m
2020-10-14T19:54:25.7656560Z �[33mExpected:�[0m
2020-10-14T19:54:25.7657760Z �[1mexitcode: 0
2020-10-14T19:54:25.7658640Z �[0m
2020-10-14T19:54:25.7659520Z �[33mGotten:�[0m
2020-10-14T19:54:25.7660400Z �[1mexitcode: 1
2020-10-14T19:54:25.7660880Z 
2020-10-14T19:54:25.7661360Z Output:
2020-10-14T19:54:25.7661850Z tioselectors.nim(459)    tioselectors
2020-10-14T19:54:25.7662440Z tioselectors.nim(68)     socket_notification_test
2020-10-14T19:54:25.7663130Z assertions.nim(30)       failedAssertImpl
2020-10-14T19:54:25.7663700Z assertions.nim(23)       raiseAssert
2020-10-14T19:54:25.7664270Z fatal.nim(49)            sysFatal
2020-10-14T19:54:25.7664960Z Error: unhandled exception: tioselectors.nim(68, 11) `server2_socket != osInvalidSocket`  [AssertionDefect]

Expected Output

works

Additional Information

nim devel 1.3.7 c2ba4ef

[timotheecour]

and again in https://dev.azure.com/nim-lang/255dfe86-e590-40bb-a8a2-3c0295ebdeb1/_apis/build/builds/10637/logs/84

[timotheecour]

again

https://dev.azure.com/nim-lang/255dfe86-e590-40bb-a8a2-3c0295ebdeb1/_apis/build/builds/15565/logs/89

2021-04-16T19:52:17.9757930Z �[32mPASS: �[36mtests/async/tgenericasync.nim c                             �[34m ( 2.70 sec)�[0m
2021-04-16T19:52:17.9759360Z �[1m�[31mFAIL: �[36mtests/async/tioselectors.nim c�[0m
2021-04-16T19:52:17.9760770Z �[1m�[36mTest "tests/async/tioselectors.nim" in category "async"�[0m
2021-04-16T19:52:17.9762080Z �[1m�[31mFailure: reExitcodesDiffer�[0m
2021-04-16T19:52:17.9763300Z �[33mExpected:�[0m
2021-04-16T19:52:17.9764480Z �[1mexitcode: 0
2021-04-16T19:52:17.9765580Z �[0m
2021-04-16T19:52:17.9766740Z �[33mGotten:�[0m
2021-04-16T19:52:17.9767940Z �[1mexitcode: 1
2021-04-16T19:52:17.9768670Z 
2021-04-16T19:52:17.9769340Z Output:
2021-04-16T19:52:17.9770040Z tioselectors.nim(459)    tioselectors
2021-04-16T19:52:17.9771490Z tioselectors.nim(68)     socket_notification_test
2021-04-16T19:52:17.9772370Z assertions.nim(68)       failedAssertImpl
2021-04-16T19:52:17.9773140Z assertions.nim(58)       raiseAssert
2021-04-16T19:52:17.9773910Z fatal.nim(53)            sysFatal
2021-04-16T19:52:17.9774810Z Error: unhandled exception: tioselectors.nim(68, 11) `server2_socket != osInvalidSocket`  [AssertionDefect]
2021-04-16T19:52:17.9775470Z 
2021-04-16T19:52:17.9776590Z �[0m
2021-04-16T19:52:17.9778020Z �[32mPASS: �[36mtests/async/tjsandnativeasync.nim c                         �[34m ( 3.35 sec)�[0m

[timotheecour]

again, on devel CI as of 98c29c0

https://dev.azure.com/nim-lang/255dfe86-e590-40bb-a8a2-3c0295ebdeb1/_apis/build/builds/16294/logs/89

2021-05-07T17:51:33.1228270Z �[32mPASS: �[36mtests/async/tgenericasync.nim cpp                           �[34m ( 3.86 sec)�[0m
2021-05-07T17:51:33.1330920Z �[1m�[31mFAIL: �[36mtests/async/tioselectors.nim cpp�[0m
2021-05-07T17:51:33.1433300Z �[1m�[36mTest "tests/async/tioselectors.nim" in category "async"�[0m
2021-05-07T17:51:33.1535950Z �[1m�[31mFailure: reExitcodesDiffer�[0m
2021-05-07T17:51:33.1536780Z �[33mExpected:�[0m
2021-05-07T17:51:33.1537670Z �[1mexitcode: 0
2021-05-07T17:51:33.1639600Z �[0m
2021-05-07T17:51:33.1742110Z �[33mGotten:�[0m
2021-05-07T17:51:33.1844300Z �[1mexitcode: 1
2021-05-07T17:51:33.1945680Z 
2021-05-07T17:51:33.2047500Z Output:
2021-05-07T17:51:33.2148920Z tioselectors.nim(459)    tioselectors
2021-05-07T17:51:33.2250340Z tioselectors.nim(68)     socket_notification_test
2021-05-07T17:51:33.2352030Z assertions.nim(68)       failedAssertImpl
2021-05-07T17:51:33.2388220Z assertions.nim(58)       raiseAssert
2021-05-07T17:51:33.2488680Z fatal.nim(53)            sysFatal
2021-05-07T17:51:33.2589250Z Error: unhandled exception: tioselectors.nim(68, 11) `server2_socket != osInvalidSocket`  [AssertionDefect]
2021-05-07T17:51:33.2689590Z 
2021-05-07T17:51:33.2791840Z �[0m
2021-05-07T17:51:33.2862250Z diff --git a/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/diffStrings_a_RwcRs3iB b/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/diffStrings_b_1p3uJul5
2021-05-07T17:51:33.2963890Z index 031aaaad..ced3ec7f 100644
2021-05-07T17:51:34.1705580Z --- a/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/diffStrings_a_RwcRs3iB
2021-05-07T17:51:34.1811390Z +++ b/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/diffStrings_b_1p3uJul5
2021-05-07T17:51:34.1812890Z @@ -1 +1,9 @@
2021-05-07T17:51:34.1915040Z -exitcode: 0
2021-05-07T17:51:34.2017050Z \ No newline at end of file
2021-05-07T17:51:34.2118850Z +exitcode: 1
2021-05-07T17:51:34.2220120Z +
2021-05-07T17:51:34.2321520Z +Output:
2021-05-07T17:51:34.2423080Z +tioselectors.nim(459)    tioselectors
2021-05-07T17:51:34.2524750Z +tioselectors.nim(68)     socket_notification_test
2021-05-07T17:51:34.2626890Z +assertions.nim(68)       failedAssertImpl
2021-05-07T17:51:34.2729350Z +assertions.nim(58)       raiseAssert
2021-05-07T17:51:34.2831120Z +fatal.nim(53)            sysFatal
2021-05-07T17:51:34.2932730Z +Error: unhandled exception: tioselectors.nim(68, 11) `server2_socket != osInvalidSocket`  [AssertionDefect]
2021-05-07T17:51:34.3034070Z 
2021-05-07T17:51:42.2056580Z �[2m�[33mJOINED: �[1m�[36mtests/vm/t11637.nim c�[0m