Why does Jenkins fail to git init and return status code 1?

Question

Scenario

We have two build slaves (xcode7 and xcode2) running the exact same instance of Mac OS X El Capitan and both with the same build tools (Xcode 7.3).
There is a user account set up in the Jenkins SSH Slave Plugin credential named 'superbuilder' and it provides credentials when SSH is started via a private key and passphrase. superbuilder is a user exists on both build slaves and has matching private keys and public keys on both machines.
One of those slaves (xcode2) can clone our repo and the other (xcode7) can't because git init fails with status code 1: (see stack trace below).

Versions of things

Jenkins version: 1.580.1
Git plugin version: 1.13.3
SSH Slave Plugin version: 1.9
Git version on both machines: 2.6.4 (Apple Git-63)

What have I tried on xcode7

Extensive searching for Jenkins bugs and "status code 1:".
Ensuring that the superbuilder user has the exact same public, private keys and known hosts as it does on xcode2.
SSH'ing into xcode7 directly and calling the exact same git clone commands locally. This succeeds and I am able to manually clone the repo.
Ensured that the git binary is available is visible to the superbuilder on its $PATH.
Ensured that buildmaster has read/write/execute permissions on the jenkins workspace directory.
Ensured that DEVELOPER_DIR is injected an environment variable and points at /Applications/Xcode

Questions

Is xcrun error relevant? By that I mean is that the source of my problem or is it something else?
What does status code 1 refer to?
Why would git init fail when run through the Jenkins SSH Slave Plugin?
Can I buy you a beer if you help with this?
Is this real life?

Stack Trace from Jenkins Build Job

[EnvInject] - Mask passwords passed as build parameters.
Started by user anonymous
[EnvInject] - Loading node environment variables.
Building remotely on xcode7-xcode (xcode7) in workspace /var/jenkins/workspace/mobile.iphone-app-xcode7.ci
Cloning the remote Git repository
Cloning repository git@git.somecorp.com:mobile/iphone-app.git
 > git init /var/jenkins/workspace/mobile.iphone-app-xcode7.ci # timeout=10
ERROR: Error cloning remote repo 'origin'
hudson.plugins.git.GitException: Could not init /var/jenkins/workspace/mobile.iphone-app-xcode7.ci
    at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$5.execute(CliGitAPIImpl.java:656)
    at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$2.execute(CliGitAPIImpl.java:463)
    at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$1.call(RemoteGitImpl.java:152)
    at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$1.call(RemoteGitImpl.java:145)
    at hudson.remoting.UserRequest.perform(UserRequest.java:121)
    at hudson.remoting.UserRequest.perform(UserRequest.java:49)
    at hudson.remoting.Request$2.run(Request.java:324)
    at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
    at ......remote call to xcode7-xcode(Native Method)
    at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1356)
    at hudson.remoting.UserResponse.retrieve(UserRequest.java:221)
    at hudson.remoting.Channel.call(Channel.java:752)
    at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler.execute(RemoteGitImpl.java:145)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler.invoke(RemoteGitImpl.java:131)
    at com.sun.proxy.$Proxy81.execute(Unknown Source)
    at hudson.plugins.git.GitSCM.retrieveChanges(GitSCM.java:1057)
    at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1097)
    at hudson.scm.SCM.checkout(SCM.java:488)
    at hudson.model.AbstractProject.checkout(AbstractProject.java:1253)
    at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:622)
    at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:86)
    at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:528)
    at hudson.model.Run.execute(Run.java:1745)
    at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
    at hudson.model.ResourceController.execute(ResourceController.java:89)
    at hudson.model.Executor.run(Executor.java:240)
Caused by: hudson.plugins.git.GitException: Command "git init /var/jenkins/workspace/mobile.iphone-app-xcode7.ci" returned         status code 1:
stdout: 
stderr: xcrun: error: missing DEVELOPER_DIR path: /Applications/Xcode
...

mkasberg · Accepted Answer

The error that it's complaining about is error: missing DEVELOPER_DIR path: /Applications/Xcode. Is that variable set on both machines? Is is the same on both machines? Does the directory exist and contain the same thing on both machines?

Why does Jenkins fail to git init and return status code 1?

Answers (2)

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