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Editorial Team
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Asked: 2026-05-27T23:45:19+00:00

Basically, this is the log I get: Started by user dontcare4free $ hg clone

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Basically, this is the log I get:

Started by user dontcare4free

$ hg clone –rev default ssh://hg@bitbucket.org/dontcare4free/my-repository /var/lib/jenkins/workspace/Custom-MC-Server

* failed to import extension hgext.imerge: No module named imerge
remote: Host key verification failed.
abort: no suitable response from remote hg!
ERROR: Failed to clone ssh://hg@bitbucket.org/dontcare4free/my-repository
[Custom-MC-Server] $ hg log –rev . –template {node}
java.io.IOException: Cannot run program “hg” (in directory “/var/lib/jenkins/workspace/My-Repository”): java.io.IOException: error=2, No such file or directory
at java.lang.ProcessBuilder.start(ProcessBuilder.java:475)
at hudson.Proc$LocalProc.(Proc.java:244)
at hudson.Proc$LocalProc.(Proc.java:216)
at hudson.Launcher$LocalLauncher.launch(Launcher.java:698)
at hudson.Launcher$ProcStarter.start(Launcher.java:329)
at hudson.Launcher$ProcStarter.join(Launcher.java:336)
at hudson.plugins.mercurial.MercurialSCM.joinWithPossibleTimeout(MercurialSCM.java:299)
at hudson.plugins.mercurial.HgExe.popen(HgExe.java:191)
at hudson.plugins.mercurial.HgExe.tip(HgExe.java:171)
at >hudson.plugins.mercurial.MercurialSCM.calcRevisionsFromBuild(MercurialSCM.java:255)
at hudson.scm.SCM._calcRevisionsFromBuild(SCM.java:304)
at hudson.model.AbstractProject.calcPollingBaseline(AbstractProject.java:1205)
at hudson.model.AbstractProject.checkout(AbstractProject.java:1194)
at hudson.model.AbstractBuild$AbstractRunner.checkout(AbstractBuild.java:555)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:443)
at hudson.model.Run.run(Run.java:1376)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:175)
Caused by: java.io.IOException: java.io.IOException: error=2, No such file or directory
at java.lang.UNIXProcess.(UNIXProcess.java:164)
at java.lang.ProcessImpl.start(ProcessImpl.java:81)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:468)
… 18 more
Jabber notifier plugin: Sending notification to: -snip-
Jabber notifier plugin: Notifying suspects
Jabber notifier plugin: Notifying culprits
Notifying upstream projects of job completion
Finished: FAILURE

As far as I can see this means that it can’t find the hg executable. However, I get no such errors when I try executing hg as a build step (shell execute) with Mercurial integration disabled.

I’ve tried with and without changing installation directory and executable and I’ve even tried compiling (well, whatever of that there is) Mercurial manually from source, all to no avail.

EDIT: Silly me. I completely misread the log. The issue is not related to it not finding the hg executable at all, but it’s actually because I forgot to set up my key properly.

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1 Answer

  1. Editorial Team

    Nullable is right, the issue isn’t that the hg executable can’t be found, but rather that the jenkins user doesn’t have a public key.

    The solution is as follows:

    1. Log in as the jenkins user
    2. Make sure the jenkins user has a public ssh key, which should be in .ssh/id_rsa.pub
    3. If not, generate one using ssh-keygen and don’t specify a passphrase
    4. Issue cat .ssh/id_rsa.pub, copy the output.
    5. Log into bitbucket or github, add the public key you just copied into your account
    6. Try again!

    Hope that helps, best of luck to anyone with this issue.

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