During our integration with CircleCI and support for Linux, we found a test causing problems as it was passing in macOS, tvOS, iOS and failing in Linux. The test includes threading and the use of GCD and Semaphores in Linux.

The name of the test is IOSafetyTests.testStopWithActiveConnections. For the moment the test was removed from the XCTestsManifest.swift and can be added once we found a proper fix for it.