Flaky test: libnetwork TestJoinLeave (failing on s390x) #42496
Description
See https://ci-next.docker.com/public/job/moby/job/PR-42325/6/execution/node/255/log/
s390x-integration-bundles.tar.gz
=== RUN TestJoinLeave
time="2021-06-07T21:16:03Z" level=warning msg="bridge store not initialized. kv object docker/network/v1.0/bridge/336a81663d2ab6e6fdca5d86c1153d6bd8ef741cb3431e087a1b5cbb92a4beae/ is not added to the store"
time="2021-06-07T21:16:03Z" level=warning msg="bridge store not initialized. kv object docker/network/v1.0/bridge-endpoint/a23f61900f8c26c136031c33e820f976caa3f51ed0e5035485f544346ce7fa09/ is not added to the store"
time="2021-06-07T21:16:04Z" level=warning msg="error destroying network sandbox" error="invalid argument"
--- FAIL: TestJoinLeave (0.67s)
api_linux_test.go:1337: Unexpected failure, got: &{failed to add interface veth2d89fd2 to sandbox: failed to set namespace on link "veth2d89fd2": invalid argument 500}