Forum Xamarin Test Cloud (Read Only)

"Unknown MSBuild failure" when trying to run tests on Mac

curiousXamarinUsercuriousXamarinUser USMember ✭✭

I'm getting a "Unknown MSBuild failure. Please try building the project again" error when I try to run tests on Test Cloud using Xamarin Studio Community for Mac (i.e by right-clicking the tests and selecting "Run in test Cloud").

When I do the same in Xamarin for Visual Studio on Windows, everything works fine.

Anyone knows the solution?


  • Kent.GreenKent.Green USXamarin Team Xamurai
    edited April 2017

    Can you send the full version information from Xamarin Studio for Windows and Xamarin Studio for Mac so we can check for any interesting differences between your setup that works vs. fails?

    Xamarin Studio > About Xamarin Studio > Show Details > Copy Information (Xamarin Studio Mac)
    Help > About > Show Details > Copy Information (Xamarin Studio Windows)

  • ChaseJohnsonChaseJohnson USMember

    I'm not OP, but I'm experiencing the same issue (except that I haven't checked if it works on Windows). Visual Studio for Mac refuses to deploy to Test Cloud.

    === Visual Studio for Mac Preview ===

    Version Preview 8 (7.0 build 2845)
    Installation UUID: ff60bef9-879c-40e7-8513-ef567fb2025d
    Mono (2017-02/4242008) (64-bit)
    GTK+ 2.24.23 (Raleigh theme)

    Package version: 500000061

    === NuGet ===


    === .NET Core ===

    Runtime: Not installed
    SDK: Not installed
    MSBuild SDKs: /Library/Frameworks/Mono.framework/Versions/5.0.0/lib/mono/msbuild/15.0/bin/Sdks

    === Xamarin.Profiler ===

    Version: 1.5.3
    Location: /Applications/Xamarin Profiler

    === Apple Developer Tools ===

    Xcode 8.3.1 (12170)
    Build 8E1000a

    === Xamarin.iOS ===

    Version: (Visual Studio Enterprise)
    Hash: 1fe8f10c
    Branch: d15-2
    Build date: 2017-04-13 22:19:00-0400

    === Xamarin.Android ===

    Version: (Visual Studio Enterprise)
    Android SDK: /Users/cjohnson11/Library/Developer/Xamarin/android-sdk-macosx
    Supported Android versions:
    4.0.3 (API level 15)
    4.4 (API level 19)
    6.0 (API level 23)
    7.1 (API level 25)

    SDK Tools Version: 25.2.5
    SDK Platform Tools Version: 25.0.3
    SDK Build Tools Version: 25.0.1

    Java SDK: /usr
    java version "1.8.0_65"
    Java(TM) SE Runtime Environment (build 1.8.0_65-b17)
    Java HotSpot(TM) 64-Bit Server VM (build 25.65-b01, mixed mode)

    Android Designer EPL code available here:

    === Xamarin.Mac ===

    Version: (Visual Studio Enterprise)

    === Xamarin Inspector ===

    Version: 1.2.1
    Hash: 0ea0a12
    Branch: d15-1
    Build date: Thu, 06 Apr 2017 20:24:44 GMT

    === Build Information ===

    Release ID: 700002845
    Git revision: 70840b5a96337c13d5c195e160723f0d1dd0da49
    Build date: 2017-04-18 14:22:15-04
    Xamarin addins: 893cf0cafd7f81a90258ab34bd9c34e4e69da4ff
    Build lane: monodevelop-lion-vs-mac-preview8-b

    === Operating System ===

    Mac OS X 10.12.4
    Darwin 16.5.0 Darwin Kernel Version 16.5.0
    Fri Mar 3 16:52:33 PST 2017
    root:xnu-3789.51.2~3/RELEASE_X86_64 x86_64

  • Kent.GreenKent.Green USXamarin Team Xamurai
    edited April 2017
    1. Do you notice if the behavior goes away (even if only temporarily) if you restart Visual Studio for Mac?
      (Or Xamarin Studio for the original poster/other users who are seeing similar behavior there).

    2. Can you send over the IDE log folder from the affected IDE?

      • Xamarin Studio: Help > Open Log Directory
      • Visual Studio for Mac: ~/Library/Logs/VisualStudio
  • Hi,

    This bug also occurs on my machine. I use latest release of Xamarin Studio and macOS, XCode, etc. Please find IDE logs here:

  • Kent.GreenKent.Green USXamarin Team Xamurai

    @BartlomiejPater Thanks for sending those logs. I've found a possibly related bug report and checked with our Xamarin Studio engineers for their thoughts on the issue, however, it looks like the logs you shared did not capture the error; the logging should show the message "Unknown MSBuild Failure" somewhere.

    1. Did you send over your entire log folder after reproducing the issue?
    2. Can you (or others reading this thread who may be seeing the problem) zip up the entire log folder after encountering the error again?
    3. Do you still reproduce the issue after restarting Xamarin Studio?
  • CuriaDamianoCuriaDamiano CHUniversity

    I have the same problem, with Xamarin Studio fully patched to the stable channel.

  • Kent.GreenKent.Green USXamarin Team Xamurai

    Hi all,

    I ran some more tests and I think I've figured out how to reproduce the bug now. It seems like it's only affecting iOS apps built as part of a Xamarin.Forms PCL project. iOS apps using shared projects, or those not using Forms at all did not reproduce the issue on my end.

    Based on this I've filed the following bug report:

  • IliaSkirkoIliaSkirko USMember

    I have the same bug when I try to run tests on physical device, using Xamarin Studio. I have Xamarin.iOS project with referenced two projects: another Xamarin.iOS and shared project. The "Unknown MSBuild failure" pops up when it tries to build referenced Xamarin.iOS project.

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