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https://issues.apache.org/jira/browse/KAFKA-4149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15479599#comment-15479599
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Ismael Juma commented on KAFKA-4149:
------------------------------------

The problem seems to go away if the `jarAll` task before `testAll` is removed, 
which I have done in the Jenkins jobs for trunk (jdk7 and jdk8) and PRs.

> java.lang.NoSuchMethodError when running streams tests
> ------------------------------------------------------
>
>                 Key: KAFKA-4149
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4149
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Ismael Juma
>
> This started happening recently, may be related to upgrading to Gradle 3:
> {code}
> java.lang.NoSuchMethodError: 
> scala.Predef$.$conforms()Lscala/Predef$$less$colon$less;
>       at kafka.utils.MockScheduler.<init>(MockScheduler.scala:38)
>       at kafka.utils.MockTime.<init>(MockTime.scala:35)
>       at kafka.utils.MockTime.<init>(MockTime.scala:37)
>       at 
> org.apache.kafka.streams.integration.utils.EmbeddedKafkaCluster.<init>(EmbeddedKafkaCluster.java:44)
>       at 
> org.apache.kafka.streams.KafkaStreamsTest.<clinit>(KafkaStreamsTest.java:42)
> {code}
> https://builds.apache.org/job/kafka-trunk-jdk7/1530/testReport/junit/org.apache.kafka.streams/KafkaStreamsTest/classMethod/



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