Troubleshooting OctoPack

Sometimes OctoPack doesn’t work the way you expected it to, or perhaps you are having trouble configuring your .nuspec file. Here are some steps to help you diagnose what is going wrong, and fix the problem.

  1. Run the build in your local development environment using the Visual Studio developer command prompt using arguments something like this:
msbuild MySolution.sln /t:Build /p:Configuration=Release /p:RunOctoPack=true /fl

The /p:RunOctoPack=true argument configures OctoPack to run as part of the build process The /fl argument configures msbuild.exe to write the output to a log file which will usually look like msbuild.log. Refer to the MSBuild documentation for more details. Note: You may need to change some of these parameters to match the process you are using on your build server. Take a look at the build server logs and try to emulate the process as closely as possible.

  1. Inspect the MSBuild output log file. If OctoPack has executed successfully you should see log entries like the ones shown below generated using OctoPack 3.0.42:
Target "OctoPack" in file "c:\dev\MyApplication\source\packages\OctoPack.3.0.42\tools\OctoPack.targets" from project "c:\dev\MyApplication\source\MyApplication.Web\MyApplication.Web.csproj" (target "Build" depends on it):
Using "GetAssemblyVersionInfo" task from assembly "c:\dev\MyApplication\source\packages\OctoPack.3.0.42\tools\OctoPack.Tasks.dll".
Task "GetAssemblyVersionInfo"
  OctoPack: Get version info from assembly: c:\dev\MyApplication\source\MyApplication.Web\bin\MyApplication.Web.dll
Done executing task "GetAssemblyVersionInfo".
Task "Message"
  Using package version:
Done executing task "Message".
Using "CreateOctoPackPackage" task from assembly "c:\dev\MyApplication\source\packages\OctoPack.3.0.42\tools\OctoPack.Tasks.dll".
Task "CreateOctoPackPackage"
  OctoPack: ---Arguments---
  OctoPack: Content files: 12
  OctoPack: ProjectDirectory: c:\dev\MyApplication\source\MyApplication.Web
  OctoPack: OutDir: bin\
  OctoPack: PackageVersion:
  OctoPack: ProjectName: MyApplication.Web
  OctoPack: PrimaryOutputAssembly: c:\dev\MyApplication\source\MyApplication.Web\bin\MyApplication.Web.dll
  OctoPack: NugetArguments:
  OctoPack: NugetProperties:
  OctoPack: ---------------
  OctoPack: Written files: 299
  OctoPack: Create directory: c:\dev\MyApplication\source\MyApplication.Web\obj\octopacking
  OctoPack: Create directory: c:\dev\MyApplication\source\MyApplication.Web\obj\octopacked
  OctoPack: Copy file: c:\dev\MyApplication\source\MyApplication.Web\MyApplication.Web.nuspec
  OctoPack: Packaging an ASP.NET web application (Web.config detected)
  OctoPack: Add content files
  OctoPack: Added file: content\images\favicon.ico
  OctoPack: Added file: Web.config

  OctoPack: Add binary files to the bin folder
  OctoPack: Added file: bin\MyApplication.Web.dll.config
  OctoPack: Added file: bin\MyApplication.Web.dll
  OctoPack: Added file: bin\MyApplication.Web.pdb
  OctoPack: NuGet.exe path: c:\dev\MyApplication\source\packages\OctoPack.3.0.42\tools\NuGet.exe
  OctoPack: Running NuGet.exe with command line arguments: pack "c:\dev\MyApplication\source\MyApplication.Web\obj\octopacking\MyApplication.Web.nuspec"  -NoPackageAnalysis -BasePath "c:\dev\MyApplication\source\MyApplication.Web" -OutputDirectory "c:\dev\MyApplication\source\MyApplication.Web\obj\octopacked" -Version
  OctoPack: Attempting to build package from 'MyApplication.Web.nuspec'.
  OctoPack: Successfully created package 'c:\dev\MyApplication\source\MyApplication.Web\obj\octopacked\MyApplication.Web.'.
  OctoPack: Packaged file: c:\dev\MyApplication\source\MyApplication.Web\obj\octopacked\MyApplication.Web.
  OctoPack: Copy file: c:\dev\MyApplication\source\MyApplication.Web\obj\octopacked\MyApplication.Web.
  OctoPack: Packages have been copied to: c:\dev\MyApplication\source\MyApplication.Web\bin\
  OctoPack: OctoPack successful
Done executing task "CreateOctoPackPackage".
Task "Message"
  Built package: c:\dev\MyApplication\source\MyApplication.Web\obj\octopacked\MyApplication.Web.
Done executing task "Message".
Task "Message"
  NuGet.exe: c:\dev\MyApplication\source\packages\OctoPack.3.0.42\tools\NuGet.exe
Done executing task "Message".
Task "Message"
  Publish to file share: ..\..\artifacts
Done executing task "Message".
Task "Copy"
  Copying file from "c:\dev\MyApplication\source\MyApplication.Web\obj\octopacked\MyApplication.Web." to "..\..\artifacts\MyApplication.Web.".
Done executing task "Copy".
Task "Message" skipped, due to false condition; ('$(OctoPackPublishPackageToHttp)' != '') was evaluated as ('' != '').
Task "Exec" skipped, due to false condition; ('$(OctoPackPublishPackageToHttp)' != '') was evaluated as ('' != '').
Done building target "OctoPack" in project "MyApplication.Web.csproj".
  • If you cannot see any OctoPack-related log messages, perhaps OctoPack isn’t installed into your project(s) correctly?
    • Try completely uninstalling OctoPack and installing it again.
    • Check inside your .csproj or .vbproj file for an include statement like the following example:
<Import Project="..\packages\OctoPack.3.0.42\tools\OctoPack.targets" Condition="Exists('..\packages\OctoPack.3.0.42\tools\OctoPack.targets')" />
  • If OctoPack is running but your files are not being packed correctly, see if the file is mentioned in the build log.
    • Files that are copied to the build output directory will be included in the package. Take a look at the contents of your build output directory and compare that with the messages in the build log.
    • For web applications, files that are configured with the Visual Studio property Build Action: Content will be included in the package.
    • If you have specified the <files> element in a custom .nuspec file, perhaps you need to add the /p:OctoPackEnforceAddingFiles=true MSBuild argument as discussed above?
    • If you have specified the <files> element in a custom .nuspec file, perhaps you need to experiment with some different combinations of include and exclude?


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Page updated on Sunday, January 1, 2023