Console Output

19:20:41 The recommended git tool is: git
19:20:44 using credential docker-jenkins-github-credentials
19:20:44 Cloning the remote Git repository
19:20:44 Cloning with configured refspecs honoured and without tags
Cloning repository https://github.com/docker/docker-py.git
 > git init /home/ubuntu/workspace/docker-py_PR-2841 # timeout=10
Fetching upstream changes from https://github.com/docker/docker-py.git
 > git --version # timeout=10
 > git --version # 'git version 2.25.1'
using GIT_ASKPASS to set credentials docker-jenkins GitHub credentials
 > git fetch --no-tags --force --progress -- https://github.com/docker/docker-py.git +refs/pull/2841/head:refs/remotes/origin/PR-2841 +refs/heads/master:refs/remotes/origin/master # timeout=10
19:20:46 Fetching without tags
 > git config remote.origin.url https://github.com/docker/docker-py.git # timeout=10
 > git config --add remote.origin.fetch +refs/pull/2841/head:refs/remotes/origin/PR-2841 # timeout=10
 > git config --add remote.origin.fetch +refs/heads/master:refs/remotes/origin/master # timeout=10
 > git config remote.origin.url https://github.com/docker/docker-py.git # timeout=10
Fetching upstream changes from https://github.com/docker/docker-py.git
using GIT_ASKPASS to set credentials docker-jenkins GitHub credentials
 > git fetch --no-tags --force --progress -- https://github.com/docker/docker-py.git +refs/pull/2841/head:refs/remotes/origin/PR-2841 +refs/heads/master:refs/remotes/origin/master # timeout=10
19:20:46 Merging remotes/origin/master commit 96c12726fdb9b24e985b4de74d5c82145ccd8185 into PR head commit 8cc39ab25c3b7e4014a3e85be9ef5ee94b81e8d5
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 8cc39ab25c3b7e4014a3e85be9ef5ee94b81e8d5 # timeout=10
 > git remote # timeout=10
19:20:46 Merge succeeded, producing 8cc39ab25c3b7e4014a3e85be9ef5ee94b81e8d5
19:20:46 Checking out Revision 8cc39ab25c3b7e4014a3e85be9ef5ee94b81e8d5 (PR-2841)
 > git config --get remote.origin.url # timeout=10
using GIT_ASKPASS to set credentials docker-jenkins GitHub credentials
 > git merge 96c12726fdb9b24e985b4de74d5c82145ccd8185 # timeout=10
 > git rev-parse HEAD^{commit} # timeout=10
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 8cc39ab25c3b7e4014a3e85be9ef5ee94b81e8d5 # timeout=10
19:20:50 Commit message: "limit upper bound of websocket-client dependency in setup.py"
19:20:50 First time build. Skipping changelog.
 > git --version # timeout=10
 > git --version # 'git version 2.25.1'
fatal: bad object 5d8b74fd03a1c7cc00e1c1f32d100ed97a17f4f0