Build failed in Jenkins: brooklyn-dist-master-docker #477

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See <https://builds.apache.org/job/brooklyn-dist-master-docker/477/display/redirect>

Changes:


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Started by timer
Running as SYSTEM
[EnvInject] - Loading node environment variables.
Building remotely on H39 (ubuntu xenial) in workspace <https://builds.apache.org/job/brooklyn-dist-master-docker/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 git://github.com/apache/brooklyn-dist.git
 > git init <https://builds.apache.org/job/brooklyn-dist-master-docker/ws/> # timeout=10
Fetching upstream changes from git://github.com/apache/brooklyn-dist.git
 > git --version # timeout=10
 > git fetch --tags --progress git://github.com/apache/brooklyn-dist.git +refs/heads/*:refs/remotes/origin/*
 > git config remote.origin.url git://github.com/apache/brooklyn-dist.git # timeout=10
 > git config --add remote.origin.fetch +refs/heads/*:refs/remotes/origin/* # timeout=10
 > git config remote.origin.url git://github.com/apache/brooklyn-dist.git # timeout=10
Fetching upstream changes from git://github.com/apache/brooklyn-dist.git
 > git fetch --tags --progress git://github.com/apache/brooklyn-dist.git +refs/heads/*:refs/remotes/origin/*
 > git rev-parse origin/master^{commit} # timeout=10
Checking out Revision 48bea886d8be16aa746af71db90906465792a4ea (origin/master)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 48bea886d8be16aa746af71db90906465792a4ea
Commit message: "Merge pull request #142 from ahgittin/licensing"
 > git rev-list --no-walk 48bea886d8be16aa746af71db90906465792a4ea # timeout=10
Run condition [Current build status] enabling prebuild for step [Execute shell]
[brooklyn-dist-master-docker] $ /bin/bash -xe /tmp/jenkins8201083223681976370.sh
+ mkdir -p .m2
[brooklyn-dist-master-docker] $ /bin/bash -xe /tmp/jenkins1487235017489663892.sh
+ docker build -t brooklyn:dist .
time="2019-10-25T15:41:07Z" level=error msg="failed to dial gRPC: cannot connect to the Docker daemon. Is 'docker daemon' running on this host?: dial unix /var/run/docker.sock: connect: connection refused"
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
Build step 'Execute shell' marked build as failure
Recording test results
ERROR: Step ?Publish JUnit test result report? failed: No test report files were found. Configuration error?
TestNG Reports Processing: START
Looking for TestNG results report in workspace using pattern: **/testng-results.xml
Did not find any matching files.

Jenkins build is back to normal : brooklyn-dist-master-docker #478

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See <https://builds.apache.org/job/brooklyn-dist-master-docker/478/display/redirect>