NimbleCarthageProblem

This repository contains a simple iOS project to demonstrate and document the problem I have encounter when working with Nimble and Carthage.

The project has one framework with one Swift file containing one Swift class. The framework has associated tests target generated by Xcode on project creation:

Now I create a framework:

For simplicity, the Host Application setting for the ExampleFrameworkTests target is set to None. We are only interested in testing the framework, not the app.

Next, I add an example Swift class - ExampleClass - to the framework in file ExampleClass.swift:

import Foundation

class ExampleClass {
    func hello() -> String {
        return "hello"
    }
}

and ExampleClassTests.swift to the ExampleFrameworkTests target:

import XCTest
@testable import ExampleFramework

class ExampleFrameworkTests: XCTestCase {
    
    func testExample() {
        XCTAssertEqual("hello", ExampleClass().hello())
    }
}

I also created a convenience scheme for the ExampleFrameworkTests target:

I run the tests and everything pass. All fine.

Bot with XCTest

Now I create a bot for ExampleFrameworkTests scheme - manual trigger, on branch xctest:

The bot runs successfully.

Bot with Nimble

Now I will add Nimble to the project. We will use Carthage - I assume you have carthage installed, otherwise you can install it with brew install carthage.

I add Cartfile.private with the following contents:

github "Quick/Nimble"

and then I run from the console:

$ carthage update --platform iOS
*** Fetching Nimble
*** Checking out Nimble at "v4.0.0"
*** xcodebuild output can be found in /var/folders/dy/yw3sj05x4c7csjfz3bxfl5q00000gn/T/carthage-xcodebuild.HogUtZ.log
*** Building scheme "Nimble-iOS" in Nimble.xcodeproj
ld: warning: embedded dylibs/frameworks only run on iOS 8 or later
ld: warning: embedded dylibs/frameworks only run on iOS 8 or later
ld: warning: embedded dylibs/frameworks only run on iOS 8 or later
ld: warning: embedded dylibs/frameworks only run on iOS 8 or later

The framework is in Carthage/Build/iOS.

I add the Nimble framework to the ExampleFrameworkTests target:

Everything as described in the Quick/Nimble documentation and I change my test file so that it has the following content:

import XCTest
import Nimble

@testable import ExampleFramework

class ExampleFrameworkTests: XCTestCase {
    
    func testExample() {
        expect(ExampleClass().hello()).to(equal("hello"))
    }
}

All builds and runs well.

Now I create a bot for the nimble branch - with exactly the same settings as the branch for xctest.

This time the bot will fail with a very misleading error:

Assertion: Opening import file for module 'ExampleFramework': Permission denied
  File: NimbleCarthageProblem/ExampleFrameworkTests/ExampleClassTests.swift:12

Below is the full log:

CompileSwiftSources normal x86_64 com.apple.xcode.tools.swift.compiler
    cd /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/Source/NimbleCarthageProblem
    export DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer
    export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:
    /Applications/Xcode.app/Contents/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:
    /bin:/usr/sbin:/sbin"
    export SDKROOT=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.3.sdk
    export TOOLCHAINS=com.apple.dt.toolchain.iOS9_3
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -incremental 
    -module-name ExampleFrameworkTests -Onone -sdk /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.3.sdk 
    -target x86_64-apple-ios9.3 -g -module-cache-path /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/ModuleCache 
    -Xfrontend -serialize-debugging-options -enable-testing 
    -I /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Products/Debug-iphonesimulator 
    -F /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Products/Debug-iphonesimulator 
    -F /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/Source/NimbleCarthageProblem/Carthage/Build/iOS 
    -F /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/Frameworks 
    -parse-as-library -c 
    -j9 /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/Source/NimbleCarthageProblem/ExampleFrameworkTests/ExampleClassTests.swift 
    -output-file-map /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/Objects-normal/x86_64/ExampleFrameworkTests-OutputFileMap.json 
    -parseable-output -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path 
    /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/Objects-normal/x86_64/ExampleFrameworkTests.swiftmodule 
    -Xcc -I/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/swift-overrides.hmap 
    -Xcc -iquote -Xcc /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/ExampleFrameworkTests-generated-files.hmap 
    -Xcc -I/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/ExampleFrameworkTests-own-target-headers.hmap 
    -Xcc -I/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/ExampleFrameworkTests-all-non-framework-target-headers.hmap 
    -Xcc -ivfsoverlay -Xcc /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/all-product-headers.yaml -Xcc -iquote 
    -Xcc /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/ExampleFrameworkTests-project-headers.hmap 
    -Xcc -I/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Products/Debug-iphonesimulator/include 
    -Xcc -I/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/DerivedSources/x86_64 
    -Xcc -I/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/DerivedSources 
    -Xcc -DDEBUG=1 -emit-objc-header -emit-objc-header-path /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/Objects-normal/x86_64/ExampleFrameworkTests-Swift.h 
    -Xcc -working-directory/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/Source/NimbleCarthageProblem -Xfrontend -serialize-debugging-options

and also this:

CompileSwift normal x86_64 /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/Source/NimbleCarthageProblem/ExampleFrameworkTests/ExampleClassTests.swift
    cd /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/Source/NimbleCarthageProblem
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -c -primary-file 
    /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/Source/NimbleCarthageProblem/ExampleFrameworkTests/ExampleClassTests.swift 
    -target x86_64-apple-ios9.3 -enable-objc-interop -sdk /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.3.sdk 
    -I /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Products/Debug-iphonesimulator 
    -F /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Products/Debug-iphonesimulator 
    -F /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/Source/NimbleCarthageProblem/Carthage/Build/iOS 
    -F /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/Frameworks 
    -enable-testing -g -module-cache-path /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/ModuleCache 
    -serialize-debugging-options -serialize-debugging-options -Xcc 
    -I/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/swift-overrides.hmap 
    -Xcc -iquote -Xcc /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/ExampleFrameworkTests-generated-files.hmap 
    -Xcc -I/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/ExampleFrameworkTests-own-target-headers.hmap 
    -Xcc -I/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/ExampleFrameworkTests-all-non-framework-target-headers.hmap 
    -Xcc -ivfsoverlay -Xcc /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/all-product-headers.yaml -Xcc -iquote -Xcc /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/ExampleFrameworkTests-project-headers.hmap 
    -Xcc -I/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Products/Debug-iphonesimulator/include -Xcc -I/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/DerivedSources/x86_64 
    -Xcc -I/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/DerivedSources -Xcc -DDEBUG=1 
    -Xcc -working-directory/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/Source/NimbleCarthageProblem 
    -emit-module-doc-path /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/Objects-normal/x86_64/ExampleClassTests~partial.swiftdoc 
    -Onone -parse-as-library -module-name ExampleFrameworkTests -emit-module-path /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/Objects-normal/x86_64/ExampleClassTests~partial.swiftmodule 
    -serialize-diagnostics-path /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/Objects-normal/x86_64/ExampleClassTests.dia 
    -emit-dependencies-path /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/Objects-normal/x86_64/ExampleClassTests.d 
    -emit-reference-dependencies-path /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/Objects-normal/x86_64/ExampleClassTests.swiftdeps 
    -o /Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/DerivedData/Build/Intermediates/NimbleCarthageProblem.build/Debug-iphonesimulator/ExampleFrameworkTests.build/Objects-normal/x86_64/ExampleClassTests.o

/Library/Developer/XcodeServer/Integrations/Caches/7a65d39f35fe6ac5726223e4e40d6924/Source/NimbleCarthageProblem/ExampleFrameworkTests/ExampleClassTests.swift:12:18: error: opening import file for module 'ExampleFramework': Permission denied
@testable import ExampleFramework

This error occurs only on build server. Local compilation is all good. This error is first after upgrading to new Server (Version 5.1 (15S5127)) and Xcode (Version 7.3 (7D175)).

A temporary solution to this problem is to add a Before Integration Trigger:

cd NimbleCarthageProblem && /usr/local/bin/carthage build --platform iOS

also shown below:

I was using the trigger in the first place originally, but after Nimble was failing a couple of times, I decided to include Nimble framework in the repository.

I am wondering if anyone experienced this and maybe found some solution.

Example project

The example project can be found at github project url. On branch xctest we see the version without Nimble. On branch nimble we have version with Nimble fraemwork added.

marcinczenko/NimbleCarthageProblem

NimbleCarthageProblem

Bot with XCTest

Bot with Nimble

Example project