Build failed in Jenkins: beam_SeedJob #1470

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GitHub pull request #5088 of commit a5ebf9146e9e05427de5b28f8900578a4cec8949, no merge conflicts.
Setting status of a5ebf9146e9e05427de5b28f8900578a4cec8949 to PENDING with url https://builds.apache.org/job/beam_SeedJob/1470/ and message: 'Build started sha1 is merged.'
Using context: Jenkins: Seed Job
[EnvInject] - Loading node environment variables.
Building remotely on beam4 (beam) in workspace <https://builds.apache.org/job/beam_SeedJob/ws/>
 > git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
 > git config remote.origin.url https://github.com/apache/beam.git # timeout=10
Fetching upstream changes from https://github.com/apache/beam.git
 > git --version # timeout=10
 > git fetch --tags --progress https://github.com/apache/beam.git +refs/heads/*:refs/remotes/origin/* +refs/pull/5088/*:refs/remotes/origin/pr/5088/*
 > git rev-parse refs/remotes/origin/pr/5088/merge^{commit} # timeout=10
 > git rev-parse refs/remotes/origin/origin/pr/5088/merge^{commit} # timeout=10
Checking out Revision 44b994ae20ca6110d07be04458b0f6fd0cfa6ff7 (refs/remotes/origin/pr/5088/merge)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 44b994ae20ca6110d07be04458b0f6fd0cfa6ff7
Commit message: "Merge a5ebf9146e9e05427de5b28f8900578a4cec8949 into 200eec699f254daba4ce586d1a60716aaede7b5e"
First time build. Skipping changelog.
Cleaning workspace
 > git rev-parse --verify HEAD # timeout=10
Resetting working tree
 > git reset --hard # timeout=10
 > git clean -fdx # timeout=10
Processing DSL script job_00_seed.groovy
Processing DSL script job_beam_Inventory.groovy
Processing DSL script job_beam_PerformanceTests_Dataflow.groovy
Processing DSL script job_beam_PerformanceTests_FileBasedIO_IT.groovy
Processing DSL script job_beam_PerformanceTests_FileBasedIO_IT_HDFS.groovy
Processing DSL script job_beam_PerformanceTests_HadoopInputFormat.groovy
Processing DSL script job_beam_PerformanceTests_JDBC.groovy
Processing DSL script job_beam_PerformanceTests_MongoDBIO_IT.groovy
Processing DSL script job_beam_PerformanceTests_Python.groovy
Processing DSL script job_beam_PerformanceTests_Spark.groovy
Processing DSL script job_beam_PostCommit_Java_GradleBuild.groovy
Processing DSL script job_beam_PostCommit_Java_ValidatesRunner_Apex.groovy
Processing DSL script job_beam_PostCommit_Java_ValidatesRunner_Dataflow.groovy
Processing DSL script job_beam_PostCommit_Java_ValidatesRunner_Flink.groovy
Processing DSL script job_beam_PostCommit_Java_ValidatesRunner_Gearpump.groovy
Processing DSL script job_beam_PostCommit_Java_ValidatesRunner_Spark.groovy
Processing DSL script job_beam_PostCommit_Python_ValidatesContainer_Dataflow.groovy
Processing DSL script job_beam_PostCommit_Python_ValidatesRunner_Dataflow.groovy
Processing DSL script job_beam_PostCommit_Python_Verify.groovy
Processing DSL script job_beam_PostRelease_NightlySnapshot.groovy
Processing DSL script job_beam_PreCommit_Go_GradleBuild.groovy
Processing DSL script job_beam_PreCommit_Java_GradleBuild.groovy
ERROR: (job_beam_PreCommit_Java_GradleBuild.groovy, line 40) No such property: gradle_switches for class: javaposse.jobdsl.dsl.jobs.FreeStyleJob

Jenkins build is back to normal : beam_SeedJob #1471

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See <https://builds.apache.org/job/beam_SeedJob/1471/display/redirect>