flaky test: router-luatest/router_test.lua

[Totktonada]

router-luatest/router_test.lua                                  
TAP13 parse failed (Descending test id on line: 'not ok 11\trouter.test_router_service_info').

No result file (router-luatest/router.result) found.
Run the test with --update-result option to write the new result file.
[ fail ]

I see no other useful information in logs. A link to the fail in CI.

[Serpentian]

TAP version 13
1..11
# Started on Fri Mar 24 17:13:34 2023
# Starting group: router
ok     1    router.test_basic
ok     2    router.test_msgpack_args
ok     3    router.test_return_raw
ok     4    router.test_map_callrw_raw
ok     5    router.test_uri_compare_and_reuse
ok     6    router.test_multilisten
ok 7    # SKIP ...gramming/Work/vshard/test/router-luatest/router_test.lua:401: nil
router_1 | 2023-03-24 17:13:36.171 [471502] main F> cfg_get('read_only')
not ok 8    router.test_enable_disable
#   Peer closed
#   stack traceback:
#       builtin/box/net_box.lua:822: in function '_request'
#       builtin/box/net_box.lua:883: in function 'eval'
#       ...gramming/Work/vshard/test/router-luatest/router_test.lua:478: in function 'router.test_enable_disable'
#       ...
#       [C]: in function 'xpcall'
ok     9    router.test_explicit_fiber_kill
not ok 10   router.test_simultaneous_cfg
#   ...Programming/Work/vshard/test/luatest_helpers/cluster.lua:106: Alias is not provided
#   stack traceback:
#       ...Programming/Work/vshard/test/luatest_helpers/cluster.lua:106: in function 'add_server'
#       ...n/Programming/Work/vshard/test/luatest_helpers/vtest.lua:571: in function 'router_new'
#       ...gramming/Work/vshard/test/router-luatest/router_test.lua:581: in function 'router.test_simultaneous_cfg'
#       ...
#       [C]: in function 'xpcall'
ok     11   router.test_router_service_info
not ok 11   router.test_router_service_info
#   Failure in after_all hook: ...ing/Work/vshard/test-run/lib/luatest/luatest/process.lua:100: kill failed: 256
#   stack traceback:
#       .../Programming/Work/vshard/test/luatest_helpers/server.lua:221: in function 'stop'
#       ...Programming/Work/vshard/test/luatest_helpers/cluster.lua:41: in function 'drop'
#       ...gramming/Work/vshard/test/router-luatest/router_test.lua:67: in function <...gramming/Work/vshard/test/router-luatest/router_test.lua:66>
#       ...
#       [C]: in function 'xpcall'
# Ran 10 tests in 1.740 seconds, 7 successes, 3 errors, 1 skipped