Build failed in Jenkins: java-idp-jetty-base-9.4-nightly #720

[Shibboleth Jenkins]

See <http://127.0.0.1:1583/jenkins/job/java-idp-jetty-base-9.4-nightly/720/display/redirect>

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Started by upstream project "java-parent-project-v7-nightly" build number 1536
originally caused by:
 Started by upstream project "trigger-nightly-v7" build number 1532
 originally caused by:
  Started by timer
Running as SYSTEM
Building remotely on EC2 (RHEL8) - RHEL8 (i-042dc15d87706973d) (aws-rhel8) in workspace <http://127.0.0.1:1583/jenkins/job/java-idp-jetty-base-9.4-nightly/ws/>
No credentials specified
Cloning the remote Git repository
Cloning repository git://git.shibboleth.net/java-idp-jetty-base
 > git init <http://127.0.0.1:1583/jenkins/job/java-idp-jetty-base-9.4-nightly/ws/> # timeout=10
Fetching upstream changes from git://git.shibboleth.net/java-idp-jetty-base
 > git --version # timeout=10
 > git fetch --tags --progress git://git.shibboleth.net/java-idp-jetty-base +refs/heads/*:refs/remotes/origin/*
 > git config remote.origin.url git://git.shibboleth.net/java-idp-jetty-base # timeout=10
 > git config --add remote.origin.fetch +refs/heads/*:refs/remotes/origin/* # timeout=10
 > git config remote.origin.url git://git.shibboleth.net/java-idp-jetty-base # timeout=10
Fetching upstream changes from git://git.shibboleth.net/java-idp-jetty-base
 > git fetch --tags --progress git://git.shibboleth.net/java-idp-jetty-base +refs/heads/*:refs/remotes/origin/*
 > git rev-parse refs/remotes/origin/9.4^{commit} # timeout=10
 > git rev-parse refs/remotes/origin/refs/heads/9.4^{commit} # timeout=10
Checking out Revision a8df0360ec3d74838bdf2258250abc30705381bc (refs/remotes/origin/9.4)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f a8df0360ec3d74838bdf2258250abc30705381bc
Commit message: "Bump version after release"
 > git rev-list --no-walk a8df0360ec3d74838bdf2258250abc30705381bc # timeout=10
FATAL: Couldn’t find any executable in /opt/maven
Build step 'Invoke top-level Maven targets' marked build as failure