call to main actor-isolated global function 'setupSnapshot(_:waitForAnimations:)' in a synchronous nonisolated context

[pedro380085]

New Issue Checklist

• Updated fastlane to the latest version
• I read the Contribution Guidelines
• I read docs.fastlane.tools
• I searched for existing GitHub issues

Issue Description

Using my Snapfile does not yield screenshots due to UITests.swift not working.

Command executed

Complete output when running fastlane, including the stack trace and command used

❌  /UITests/UITests.swift:36:9: call to main actor-isolated global function 'setupSnapshot(_:waitForAnimations:)' in a synchronous nonisolated context
    setupSnapshot(app)
                                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

❌  /UITests/UITests.swift:41:9: call to main actor-isolated global function 'snapshot(_:waitForLoadingIndicator:)' in a synchronous nonisolated context
    snapshot("0-LandingScreen", waitForLoadingIndicator: false);
     ^

❌  /UITests/UITests.swift:46:9: call to main actor-isolated global function 'snapshot(_:waitForLoadingIndicator:)' in a synchronous nonisolated context
    snapshot("1-LandingScreen", waitForLoadingIndicator: false);
     ^

❌  /UITests/UITests.swift:51:9: call to main actor-isolated global function 'snapshot(_:waitForLoadingIndicator:)' in a synchronous nonisolated context
    snapshot("2-LandingScreen", waitForLoadingIndicator: false);
     ^

Environment

 fastlane installation at path:
/opt/homebrew/lib/ruby/gems/3.3.0/gems/fastlane-2.220.0/bin/fastlane
-----------------------------
[✔] 🚀 
fastlane 2.220.0
 

[pedro380085]

I get this issue on all runs since upgrading to Xcode 15.3.

[pedro380085]

It was an issue with my UITests.swift file, I added @MainActor to my testExample function and it worked.