When I do helm test as follows:

helm test black-box-7b6979c6-tester --debug --timeout 7200 > ./helm_test.log 2>&1 &

Test fails with the following log:

[debug] Created tunnel using local port: '33023'

[debug] SERVER: "127.0.0.1:33023"
RUNNING: black-box-7b6979c6-tester-integration-tests
ERROR: watch closed before UntilWithoutRetry timeout
Error: 1 test(s) failed

The test pod runs integration test with maven and when streaming the logs in test pod with kubectl logs -f the maven is continuing to download artifacts and then it gets terminated abruptly with the error:

rpc error: code = Unknown desc = Error: No such container: <long container id>

Downloading from xxx: <url to pom>
Downloading from xxx: <url to pom>
Downloading from xxx: <url to pom>
Downloading from xxx: <url to pom>
rpc error: code = Unknown desc = Error: No such container: 9014ef540248895b62e1953d7158f87bc4fe18f138677355f78e7961e44eca2f

Neither did I find anything wrong with the pod or the installation (I'm able to stream the logs) nor could I find anything much about the error.

More info on environment:

Nodes run RHEL 7.6

+ kubectl version
Client Version: version.Info{Major:"1", Minor:"13", GitVersion:"v1.13.2", GitCommit:"cff46ab41ff0bb44d8584413b598ad8360ec1def", GitTreeState:"clean", BuildDate:"2019-01-10T23:35:51Z", GoVersion:"go1.11.4", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"12+", GitVersion:"v1.12.3-1+fee411aca93f0e", GitCommit:"fee411aca93f0e786995cc125cf8f9783484f958", GitTreeState:"clean", BuildDate:"2018-12-04T06:45:24Z", GoVersion:"go1.10.4", Compiler:"gc", Platform:"linux/amd64"}

+ helm version
Client: &version.Version{SemVer:"v2.12.3", GitCommit:"eecf22f77df5f65c823aacd2dbd30ae6c65f186e", GitTreeState:"clean"}
Server: &version.Version{SemVer:"v2.12.1", GitCommit:"02a47c7249b1fc6d8fd3b94e6b4babf9d818144e", GitTreeState:"clean"}