Console Output

20:22:18 The recommended git tool is: git
20:22:19 using credential docker-jenkins-github-credentials
20:22:19 Cloning the remote Git repository
20:22:19 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-2809 # 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/2809/head:refs/remotes/origin/PR-2809 +refs/heads/master:refs/remotes/origin/master # timeout=10
20:22:21 Fetching without tags
20:22:21 Merging remotes/origin/master commit 96c12726fdb9b24e985b4de74d5c82145ccd8185 into PR head commit 7ac8b56730c70e3b61ad628e7512082a4468e4f3
20:22:22 Merge succeeded, producing 7ac8b56730c70e3b61ad628e7512082a4468e4f3
20:22:22 Checking out Revision 7ac8b56730c70e3b61ad628e7512082a4468e4f3 (PR-2809)
 > git config remote.origin.url https://github.com/docker/docker-py.git # timeout=10
 > git config --add remote.origin.fetch +refs/pull/2809/head:refs/remotes/origin/PR-2809 # 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/2809/head:refs/remotes/origin/PR-2809 +refs/heads/master:refs/remotes/origin/master # timeout=10
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 7ac8b56730c70e3b61ad628e7512082a4468e4f3 # timeout=10
 > git remote # timeout=10
 > 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 7ac8b56730c70e3b61ad628e7512082a4468e4f3 # timeout=10
20:22:25 Commit message: "Add `CapabilityAdd` and `CapabilityDrop` to"
20:22:25 First time build. Skipping changelog.
 > git --version # timeout=10
 > git --version # 'git version 2.25.1'
fatal: bad object 5d8b74fd03a1c7cc00e1c1f32d100ed97a17f4f0