text/noreply.test.py fails sporadically

[Totktonada]

Versions:

• Tarantool 2.8.2 Debug plus memcached master (1.0.1-40-g5aaac83) Debug.
• Tarantool 2.10.0-beta2-206-g63de77fd8 Debug plus memcached master + PR memcached: use own small's arena #102 (2596c33).

The second configuration fails less often, but still. So I guess (and hope) that it is irrelevant to #59 and #96.

$ TEST_RUN_TESTS="$(yes noreply | head -n 100)" make test-memcached
# or several times
$ for i in {1..10}; do TEST_RUN_TESTS="$(yes noreply | head -n 100)" make test-memcached || break; echo -e "\n==== $i ====\n"; done

The fail:

[001] text/noreply.test.py                                            [ fail ]
[001] 
[001] Test failed! Result content mismatch:
[001] --- text/noreply.result	Thu Mar 17 03:14:16 2022
[001] +++ var/rejects/text/noreply.reject	Mon Mar 28 20:13:34 2022
[001] @@ -19,8 +19,6 @@
[001]  <<--------------------------------------------------
[001]  get noreply:foo
[001]  >>--------------------------------------------------
[001] -VALUE noreply:foo 0 1
[001] -1
[001]  END
[001]  <<--------------------------------------------------
[001]  set noreply:foo 0 0 1 noreply
[001] 

Got 4 fails of 100 runs on 2.8.2 and less than 1 per 100 on 2.10.0-beta2-206-g63de77fd8.