Console Output

11:56:11 The recommended git tool is: git
11:56:13 using credential docker-jenkins-github-credentials
11:56:13 Cloning the remote Git repository
11:56:13 Cloning with configured refspecs honoured and without tags
Cloning repository https://github.com/docker/libcompose.git
 > git init /home/ubuntu/workspace/libcompose_PR-532 # timeout=10
Fetching upstream changes from https://github.com/docker/libcompose.git
 > git --version # timeout=10
 > git --version # 'git version 2.17.1'
using GIT_ASKPASS to set credentials docker-jenkins GitHub credentials
 > git fetch --no-tags --progress -- https://github.com/docker/libcompose.git +refs/pull/532/head:refs/remotes/origin/PR-532 +refs/heads/master:refs/remotes/origin/master # timeout=10
11:56:15 Fetching without tags
11:56:15 Merging remotes/origin/master commit 143e0f3f1ab9caa587b9821028c60d41d203de3e into PR head commit d40bf4c4cf940e69cbed0a759ba018eff7c1b2e0
11:56:15 Merge succeeded, producing d40bf4c4cf940e69cbed0a759ba018eff7c1b2e0
11:56:15 Checking out Revision d40bf4c4cf940e69cbed0a759ba018eff7c1b2e0 (PR-532)
 > git config remote.origin.url https://github.com/docker/libcompose.git # timeout=10
 > git config --add remote.origin.fetch +refs/pull/532/head:refs/remotes/origin/PR-532 # 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/libcompose.git # timeout=10
Fetching upstream changes from https://github.com/docker/libcompose.git
using GIT_ASKPASS to set credentials docker-jenkins GitHub credentials
 > git fetch --no-tags --progress -- https://github.com/docker/libcompose.git +refs/pull/532/head:refs/remotes/origin/PR-532 +refs/heads/master:refs/remotes/origin/master # timeout=10
 > git config core.sparsecheckout # timeout=10
 > git checkout -f d40bf4c4cf940e69cbed0a759ba018eff7c1b2e0 # 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 143e0f3f1ab9caa587b9821028c60d41d203de3e # timeout=10
 > git rev-parse HEAD^{commit} # timeout=10
 > git config core.sparsecheckout # timeout=10
 > git checkout -f d40bf4c4cf940e69cbed0a759ba018eff7c1b2e0 # timeout=10
11:56:19 Commit message: "Add deprecation notice"
11:56:19 First time build. Skipping changelog.
 > git --version # timeout=10
 > git --version # 'git version 2.17.1'
fatal: bad object 5d8b74fd03a1c7cc00e1c1f32d100ed97a17f4f0