IpVersions/GolangIntegrationTest.DynamicMetadata_Async_Sleep/IPv6 flake

[alyssawilk]

https://dev.azure.com/cncf/envoy/_build/results?buildId=159064&view=logs&j=767be981-567e-57d8-68c3-2140ede0a0bd&t=2181edf2-f610-59f2-c43a-04bb9d0bca00&l=1032

[ RUN ] IpVersions/GolangIntegrationTest.DynamicMetadata_Async_Sleep/IPv6
[2024-01-04 19:42:03.814][86310][error][golang] [contrib/golang/common/log/cgo.cc:24] [http][basic] log test
[2024-01-04 19:42:03.814][86310][critical][golang] [contrib/golang/common/log/cgo.cc:27] [http][basic] log test
[2024-01-04 19:42:03.814][86310][error][golang] [contrib/golang/common/log/cgo.cc:24] log test
[2024-01-04 19:42:03.814][86310][critical][golang] [contrib/golang/common/log/cgo.cc:27] log test
[2024-01-04 19:42:03.814][86310][error][golang] [contrib/golang/common/log/cgo.cc:24] log test false
[2024-01-04 19:42:03.814][86310][critical][golang] [contrib/golang/common/log/cgo.cc:27] log test false
[2024-01-04 19:42:13.816][85526][critical][assert] [test/integration/http_integration.cc:560] assert failure: 0. Details: Timed out waiting for new connection.
[2024-01-04 19:42:13.816][85526][critical][backtrace] [./source/server/backtrace.h:104] Caught Aborted, suspect faulting address 0x3e900014e16
[2024-01-04 19:42:13.816][85526][critical][backtrace] [./source/server/backtrace.h:91] Backtrace (use tools/stack_decode.py to get line numbers):
[2024-01-04 19:42:13.816][85526][critical][backtrace] [./source/server/backtrace.h:92] Envoy version: 0/1.29.0-dev/test/RELEASE/BoringSSL
[2024-01-04 19:42:13.817][85526][critical][backtrace] [./source/server/backtrace.h:96] #0: __kernel_rt_sigreturn [0xffff926b38fc]
[2024-01-04 19:42:13.817][85526][critical][backtrace] [./source/server/backtrace.h:96] #1: abort [0xffff92428aac]
[2024-01-04 19:42:13.828][85526][critical][backtrace] [./source/server/backtrace.h:96] #2: Envoy::HttpIntegrationTest::waitForNextUpstreamConnection() [0xe73e58]
[2024-01-04 19:42:13.856][85526][critical][backtrace] [./source/server/backtrace.h:96] #3: Envoy::HttpIntegrationTest::waitForNextUpstreamRequest() [0xe735a8]
[2024-01-04 19:42:13.879][85526][critical][backtrace] [./source/server/backtrace.h:96] #4: Envoy::HttpIntegrationTest::waitForNextUpstreamRequest() [0xe740c0]
[2024-01-04 19:42:13.890][85526][critical][backtrace] [./source/server/backtrace.h:96] #5: Envoy::GolangIntegrationTest::testDynamicMetadata() [0xbcf408]
[2024-01-04 19:42:13.916][85526][critical][backtrace] [./source/server/backtrace.h:96] #6: Envoy::GolangIntegrationTest_DynamicMetadata_Async_Sleep_Test::TestBody() [0xbcfe48]
[2024-01-04 19:42:13.932][85526][critical][backtrace] [./source/server/backtrace.h:96] #7: testing::internal::HandleExceptionsInMethodIfSupported<>() [0x2099bb0]
[2024-01-04 19:42:13.953][85526][critical][backtrace] [./source/server/backtrace.h:96] #8: testing::Test::Run() [0x2099a50]
[2024-01-04 19:42:13.964][85526][critical][backtrace] [./source/server/backtrace.h:96] #9: testing::TestInfo::Run() [0x209aba0]
[2024-01-04 19:42:13.975][85526][critical][backtrace] [./source/server/backtrace.h:96] #10: testing::TestSuite::Run() [0x209b90c]
[2024-01-04 19:42:13.987][85526][critical][backtrace] [./source/server/backtrace.h:96] #11: testing::internal::UnitTestImpl::RunAllTests() [0x20a8e14]
[2024-01-04 19:42:13.998][85526][critical][backtrace] [./source/server/backtrace.h:96] #12: testing::internal::HandleExceptionsInMethodIfSupported<>() [0x20a88c8]
[2024-01-04 19:42:14.009][85526][critical][backtrace] [./source/server/backtrace.h:96] #13: testing::UnitTest::Run() [0x20a8724]
[2024-01-04 19:42:14.020][85526][critical][backtrace] [./source/server/backtrace.h:96] #14: Envoy::TestRunner::runTests() [0x1a29fe8]
[2024-01-04 19:42:14.032][85526][critical][backtrace] [./source/server/backtrace.h:96] #15: main [0x1a28e18]
[2024-01-04 19:42:14.032][85526][critical][backtrace] [./source/server/backtrace.h:96] #16: __libc_start_main [0xffff92428e10]