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Editorial Team
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Asked: 2026-05-29T12:15:51+00:00

I have CruiseControl.NET configured using the Mercurial source control block. When I first executed

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I have CruiseControl.NET configured using the Mercurial source control block. When I first executed the build, the code was downloaded from my Kiln repository and the build went off without a hitch. However, every subsequent build fails, and I believe the reason is because hg.exe pull is returning an “error” code of 1 indicating there were no changes detected. I verified the return code by using Process Explorer. The thing is, CruiseControl.NET is apparently treating this as a failure condition but I’d prefer if it simply did not treat the attempt as a build. It’s been my experience that with other source control systems, CruiseControl.NET will simply do nothing if there are no changes in the repository.

[Project:DEBUG] Starting process [C:\Program Files\Mercurial\hg.exe] in working directory [D:\Working] with arguments [pull https://urlredacted]
[Project:DEBUG] Not setting PriorityClass on [C:\Program Files\Mercurial\hg.exe] to default Normal
[10:DEBUG] [Project C:\Program Files\Mercurial\hg.exe] standard-error stream closed -- null received in event
[9:DEBUG] [Project C:\Program Files\Mercurial\hg.exe] pulling from https://urlredacted
[6:DEBUG] [Project C:\Program Files\Mercurial\hg.exe] process exited event received
[9:DEBUG] [Project C:\Program Files\Mercurial\hg.exe] searching for changes
[9:DEBUG] [Project C:\Program Files\Mercurial\hg.exe] no changes found
[9:DEBUG] [Project C:\Program Files\Mercurial\hg.exe] standard-output stream closed -- null received in event
[Project:WARN] Source control failure (GetModifications): Source control operation failed: . Process command: C:\Program Files\Mercurial\hg.exe pull https://urlredacted

My question is, is there a CruiseControl.NET configuration I can use to get it to ignore the build attempt if hg.exe pull results in a 1, or am I going to have to go modify CruiseControl.NET code?

I’m using CruiseControl.NET 1.6 and Mercurial 2.1.

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1 Answer

  1. Editorial Team

    The problem is that Mercurial 2.1 changed the return code for hg pull when no changesets were pulled. That is a backwards incompatible change and scripts and tools will now have to be updated to take this into account.

    I expect the next version of CruiseControl.NET to take this into account. In the mean time, a small batch file can be used (as you suggest in your comment).

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