You are receiving the following error message during your build when using the SwiftLint plugin:

You must trust and enable the SwiftLint plugin during your build to resolve this error.

You can do so by adding the following flag to your xcodebuild configuration: -skipPackagePluginValidation.

Alternatively, you can use a Script Step to skip the validation of the digital signatures of package plugins. Add a Script Step with the following code to your Workflow before the Xcode Step with the error:

If the error persists after you tried the above solutions, you can check the SwiftLint GitHub page and try out different SwiftLint versions.