title: Segmentation Fault when running the project
body: <p>I have just simply added the RxSwift and RxCocoa pods to my project. When I try to run , it ends up with segmentation fault 11</p>
  
  <p>I tried to delete the project and recreate it, it is still happening.</p>
  
  <p>This is the error block</p>
  
  <pre><code>RxSwift/RxSwift/ViewController.swift:10:8: warning: file 'ViewController.swift' is part of module 'RxSwift'; ignoring import
  import RxSwift
         ^
  &lt;unknown&gt;:0: error: circular dependency between modules 'RxSwift' and 'RxRelay'
  Stack dump:
  0.  Program arguments: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -c -primary-file /Users/myMAC/Documents/Debanjan_iOS/RxSwift/RxSwift/ViewController.swift /Users/myMAC/Documents/Debanjan_iOS/RxSwift/RxSwift/AppDelegate.swift -emit-module-path /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/Objects-normal/x86_64/ViewController~partial.swiftmodule -emit-module-doc-path /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/Objects-normal/x86_64/ViewController~partial.swiftdoc -serialize-diagnostics-path /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/Objects-normal/x86_64/ViewController.dia -emit-dependencies-path /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/Objects-normal/x86_64/ViewController.d -emit-reference-dependencies-path /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/Objects-normal/x86_64/ViewController.swiftdeps -target x86_64-apple-ios12.0-simulator -enable-objc-interop -sdk /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.2.sdk -I /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Products/Debug-iphonesimulator -F /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Products/Debug-iphonesimulator -F /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Products/Debug-iphonesimulator/RxCocoa -F /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Products/Debug-iphonesimulator/RxRelay -F /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Products/Debug-iphonesimulator/RxSwift -enable-testing -g -module-cache-path /Users/myMAC/Library/Developer/Xcode/DerivedData/ModuleCache.noindex -swift-version 5 -enforce-exclusivity=checked -Onone -D DEBUG -D COCOAPODS -serialize-debugging-options -Xcc -working-directory -Xcc /Users/myMAC/Documents/Debanjan_iOS/RxSwift -enable-anonymous-context-mangled-names -Xcc -I/Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/swift-overrides.hmap -Xcc -iquote -Xcc /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/RxSwift-generated-files.hmap -Xcc -I/Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/RxSwift-own-target-headers.hmap -Xcc -I/Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/RxSwift-all-non-framework-target-headers.hmap -Xcc -ivfsoverlay -Xcc /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/all-product-headers.yaml -Xcc -iquote -Xcc /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/RxSwift-project-headers.hmap -Xcc -I/Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Products/Debug-iphonesimulator/include -Xcc -I/Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Products/Debug-iphonesimulator/RxCocoa/RxCocoa.framework/Headers -Xcc -I/Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Products/Debug-iphonesimulator/RxRelay/RxRelay.framework/Headers -Xcc -I/Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Products/Debug-iphonesimulator/RxSwift/RxSwift.framework/Headers -Xcc -I/Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/DerivedSources-normal/x86_64 -Xcc -I/Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/DerivedSources/x86_64 -Xcc -I/Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/DerivedSources -Xcc -DDEBUG=1 -Xcc -DCOCOAPODS=1 -module-name RxSwift -o /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Build/Intermediates.noindex/RxSwift.build/Debug-iphonesimulator/RxSwift.build/Objects-normal/x86_64/ViewController.o -index-store-path /Users/myMAC/Library/Developer/Xcode/DerivedData/RxSwift-gjewryzxztmluifpnkaqwnrbconi/Index/DataStore -index-system-modules 
  0  swift                    0x000000010cbf4ee3 PrintStackTraceSignalHandler(void*) + 51
  1  swift                    0x000000010cbf46bc SignalHandler(int) + 348
  2  libsystem_platform.dylib 0x00007fff5ad89b5d _sigtramp + 29
  3  libsystem_platform.dylib 0x00000001108c9384 _sigtramp + 3048470596
  4  swift                    0x0000000109e21f85 swift::SerializedModuleLoaderBase::loadModule(swift::SourceLoc, llvm::ArrayRef&lt;std::__1::pair&lt;swift::Identifier, swift::SourceLoc&gt; &gt;) + 629
  5  swift                    0x0000000109f82de5 swift::ASTContext::getModule(llvm::ArrayRef&lt;std::__1::pair&lt;swift::Identifier, swift::SourceLoc&gt; &gt;) + 245
  6  swift                    0x0000000109c655ff swift::performNameBinding(swift::SourceFile&amp;, unsigned int) + 1695
  7  swift                    0x000000010954ec1a swift::CompilerInstance::performSemaUpTo(swift::SourceFile::ASTStage_t) + 3562
  8  swift                    0x0000000108a4d2f6 performCompile(swift::CompilerInstance&amp;, swift::CompilerInvocation&amp;, llvm::ArrayRef&lt;char const*&gt;, int&amp;, swift::FrontendObserver*, swift::UnifiedStatsReporter*) + 838
  9  swift                    0x0000000108a496de swift::performFrontend(llvm::ArrayRef&lt;char const*&gt;, char const*, void*, swift::FrontendObserver*) + 6862
  10 swift                    0x00000001089e77be main + 1246
  11 libdyld.dylib            0x00007fff5aba43d5 start + 1
  12 libdyld.dylib            0x000000000000005c start + 2772810888
  error: Segmentation fault: 11
  </code></pre>
  
  <p>This is my sample project code</p>
  
  <pre><code>import UIKit
  import RxSwift
  import RxCocoa
  
  class ViewController: UIViewController {
      @IBOutlet weak var resetBtn: UIButton!
      @IBOutlet weak var validateBtn: UIButton!
      @IBOutlet weak var secondErrorLabel: UILabel!
      @IBOutlet weak var firstErrorLabel: UILabel!
      @IBOutlet weak var secTxtField: UITextField!
      @IBOutlet weak var firstTxtField: UITextField!
  
  
      override func viewDidLoad() {
          super.viewDidLoad()
  
          setUpObservables()
          // Do any additional setup after loading the view.
      }
  
      func setUpObservables() {
  
      }
  
  }
  </code></pre>
  
  <p>This is the podfile of the project</p>
  
  <pre><code>target 'RxSwift' do
    # Comment the next line if you're not using Swift and don't want to use dynamic frameworks
    use_frameworks!
  
    # Pods for RxSwift
    pod 'RxSwift', '~&gt; 5.0.0'
    pod 'RxCocoa', '~&gt; 5.0.0'
  
  end
  </code></pre>