fastlane: Scan hangs until simulator is killed, Xcode 8, iOS 10 simulator

New Issue Checklist

• Updated fastlane to the latest version
• I have read the Contribution Guidelines

Issue Description

Running scan under Xcode 8 hangs after tests are complete.

[16:16:38]: ▸ ✓ testExample (0.001 seconds)
[16:16:38]: ▸      Executed 1 test, with 0 failures (0 unexpected) in 0.001 (0.003) seconds
[16:16:38]: ▸ 
[16:16:38]: ▸ Test Succeeded

If I manually quit the simulator, scan then prints the test output the the fastlane run continues.

Configuration Files

Please copy the complete content of your Fastfile and any other configuration files you use below:

Fastfile:

  desc "Runs all the tests."
  lane :runTests do
    scan(
      configuration: "Debug",
      output_types: "junit",
      device: "iPhone 6s (10.0)",
    )
  end

Environment

fastlane version (run fastlane -v):

fastlane -v
/Users/jshier/.rvm/gems/ruby-2.3.1@project/gems/commander-4.3.5/lib/commander/user_interaction.rb:334: warning: constant ::TimeoutError is deprecated
fastlane 1.95.0

Do you use bundler to execute fastlane (i.e. bundle exec fastlane)?

Yes, through RVM.

Do you use a Ruby environment manager (e.g. chruby, rbenv, rvm)?

Yes, RVM.