Build failed in Jenkins: Creadur-Rat #442

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See <https://builds.apache.org/job/Creadur-Rat/442/display/redirect>

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Started by user pottlinger
[EnvInject] - Loading node environment variables.
Building remotely on apache-beam-jenkins-10 (beam) in workspace <https://builds.apache.org/job/Creadur-Rat/ws/>
[WS-CLEANUP] Deleting project workspace...
[WS-CLEANUP] Deferred wipeout is used...
[WS-CLEANUP] Done
No credentials specified
Cloning the remote Git repository
Cloning repository https://gitbox.apache.org/repos/asf/creadur-rat.git
 > git init <https://builds.apache.org/job/Creadur-Rat/ws/> # timeout=10
Fetching upstream changes from https://gitbox.apache.org/repos/asf/creadur-rat.git
 > git --version # timeout=10
 > git fetch --tags --progress https://gitbox.apache.org/repos/asf/creadur-rat.git +refs/heads/*:refs/remotes/origin/*
 > git config remote.origin.url https://gitbox.apache.org/repos/asf/creadur-rat.git # timeout=10
 > git config --add remote.origin.fetch +refs/heads/*:refs/remotes/origin/* # timeout=10
 > git config remote.origin.url https://gitbox.apache.org/repos/asf/creadur-rat.git # timeout=10
Cleaning workspace
 > git rev-parse --verify HEAD # timeout=10
No valid HEAD. Skipping the resetting
 > git clean -fdx # timeout=10
Fetching upstream changes from https://gitbox.apache.org/repos/asf/creadur-rat.git
 > git fetch --tags --progress https://gitbox.apache.org/repos/asf/creadur-rat.git +refs/heads/*:refs/remotes/origin/*
 > git rev-parse refs/remotes/origin/master^{commit} # timeout=10
 > git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
Checking out Revision b9f0d23b2d49b594bfa6dae348f5c712035b0af2 (refs/remotes/origin/master)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f b9f0d23b2d49b594bfa6dae348f5c712035b0af2
Commit message: "RAT-254: Remove old hints of SVN site repo/procedure"
First time build. Skipping changelog.
ERROR: Maven Home /home/jenkins/tools/maven/apache-maven-3.3.9 doesnt exist

Jenkins build is back to normal : Creadur-Rat #443

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See <https://builds.apache.org/job/Creadur-Rat/443/display/redirect>