ubuntu_k8s_unit_tests failed with GCP (scheduler / master / spdy)

There are 3 failures found on Cosmic GCP (n1-highcpu-16)

* k8s.io/kubernetes/pkg/controller/nodelifecycle/scheduler
* k8s.io/kubernetes/pkg/master
* k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/util/httpstream/spdy [build failed]

Steps to reproduce:
sudo apt-get install git python-minimal python-yaml gdb -y
git clone --depth=1 git://kernel.ubuntu.com/ubuntu/autotest-client-tests
git clone --depth=1 git://kernel.ubuntu.com/ubuntu/autotest
rm -fr autotest/client/tests
ln -sf ~/autotest-client-tests autotest/client/tests
AUTOTEST_PATH=/home/ubuntu/autotest sudo -E autotest/client/autotest-local --verbose autotest/client/tests/ubuntu_k8s_unit_tests/control

Error messages:

* k8s.io/kubernetes/pkg/controller/nodelifecycle/scheduler

 --- FAIL: TestUpdateNodeWithMultiplePods (2.56s)
 taint_manager_test.go:486: Starting testcase "Pods with different toleration times are evicted appropriately"
 taint_manager_test.go:512: Sleeping for 499.999448ms
 taint_manager_test.go:521: Found not-delete action with verb list. Ignoring.
 taint_manager_test.go:538: Found not-delete action with verb list. Ignoring.
 taint_manager_test.go:512: Sleeping for 594.563805ms
 taint_manager_test.go:532: Failed to deleted pod pod2 after 0
 taint_manager_test.go:486: Starting testcase "Evict all pods not matching all taints instantly"
 taint_manager_test.go:512: Sleeping for 499.999844ms
 taint_manager_test.go:521: Found not-delete action with verb list. Ignoring.
 taint_manager_test.go:521: Found not-delete action with verb list. Ignoring.
 taint_manager_test.go:521: Found not-delete action with verb list. Ignoring.
 taint_manager_test.go:538: Found not-delete action with verb list. Ignoring.
 FAIL
 FAIL k8s.io/kubernetes/pkg/controller/nodelifecycle/scheduler 35.544s

* k8s.io/kubernetes/pkg/master
 2019-03-21 16:02:16.793715 I | integration: launching 2444030890339279063 (unix://localhost:24440308903392790630)
 2019-03-21 16:02:16.798460 I | etcdserver: name = 2444030890339279063
 2019-03-21 16:02:16.798550 I | etcdserver: data dir = /tmp/etcd396328703
 2019-03-21 16:02:16.798566 I | etcdserver: member dir = /tmp/etcd396328703/member
 2019-03-21 16:02:16.798576 I | etcdserver: heartbeat = 10ms
 2019-03-21 16:02:16.798585 I | etcdserver: election = 100ms
 2019-03-21 16:02:16.798594 I | etcdserver: snapshot count = 0
 2019-03-21 16:02:16.798635 I | etcdserver: advertise client URLs = unix://127.0.0.1:2100211086
 2019-03-21 16:02:16.798657 I | etcdserver: initial advertise peer URLs = unix://127.0.0.1:2100111086
 2019-03-21 16:02:16.798676 I | etcdserver: initial cluster = 2444030890339279063=unix://127.0.0.1:2100111086
 2019-03-21 16:02:16.804030 I | etcdserver: starting member d951fd13cdcf6e11 in cluster b8d26aa038f828d
 2019-03-21 16:02:16.804137 I | raft: d951fd13cdcf6e11 became follower at term 0
 2019-03-21 16:02:16.804164 I | raft: newRaft d951fd13cdcf6e11 [peers: [], term: 0, commit: 0, applied: 0, lastindex: 0, lastterm: 0]
 2019-03-21 16:02:16.804206 I | raft: d951fd13cdcf6e11 became follower at term 1
 2019-03-21 16:02:16.818807 W | auth: simple token is not cryptographically signed
 2019-03-21 16:02:16.822703 I | etcdserver: set snapshot count to default 100000
 2019-03-21 16:02:16.822805 I | etcdserver: starting server... [version: 3.2.13, cluster version: to_be_decided]
 2019-03-21 16:02:16.823182 I | integration: launched 2444030890339279063 (unix://localhost:24440308903392790630)
 2019-03-21 16:02:16.825229 I | etcdserver/membership: added member d951fd13cdcf6e11 [unix://127.0.0.1:2100111086] to cluster b8d26aa038f828d
 2019-03-21 16:02:16.885057 I | raft: d951fd13cdcf6e11 is starting a new election at term 1
 2019-03-21 16:02:16.885151 I | raft: d951fd13cdcf6e11 became candidate at term 2
 2019-03-21 16:02:16.885168 I | raft: d951fd13cdcf6e11 received MsgVoteResp from d951fd13cdcf6e11 at term 2
 2019-03-21 16:02:16.885180 I | raft: d951fd13cdcf6e11 became leader at term 2
 2019-03-21 16:02:16.885187 I | raft: raft.node: d951fd13cdcf6e11 elected leader d951fd13cdcf6e11 at term 2
 2019-03-21 16:02:16.885759 I | etcdserver: setting up the initial cluster version to 3.2
 2019-03-21 16:02:16.886707 N | etcdserver/membership: set the initial cluster version to 3.2
 2019-03-21 16:02:16.886797 I | etcdserver/api: enabled capabilities for version 3.2
 2019-03-21 16:02:16.886857 I | etcdserver: published {Name:2444030890339279063 ClientURLs:[unix://127.0.0.1:2100211086]} to cluster b8d26aa038f828d
 [restful] 2019/03/21 16:02:17 log.go:33: [restful/swagger] listing is available at http://192.168.10.4:443/swaggerapi
 [restful] 2019/03/21 16:02:17 log.go:33: [restful/swagger] http://192.168.10.4:443/swaggerui/ is mapped to folder /swagger-ui/
 panic: test timed out after 2m0s

Please find the attachment for the complete test log.

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: linux-image-4.18.0-1008-gcp 4.18.0-1008.9
ProcVersionSignature: Ubuntu 4.18.0-1008.9-gcp 4.18.20
Uname: Linux 4.18.0-1008-gcp x86_64
ApportVersion: 2.20.10-0ubuntu13.2
Architecture: amd64
Date: Wed Apr 10 11:05:59 2019
SourcePackage: linux-signed-gcp
UpgradeStatus: No upgrade log present (probably fresh install)