 
   func testDownload_OK() throws
   {
-#if os(Linux) && !swift(>=5.1.2)
+#if os(Linux) && !swift(>=5.1.3)
     print("this test does not succeed due to a corelibs-foundation bug")
 #else
     TestURLServer.register(url: textURL, response: simpleGET(_:))


  func testDownload_NotFound() throws
  {
#if os(Linux) && !swift(>=5.1.2)
    print("this test does not succeed due to a corelibs-foundation bug")
#else
    TestURLServer.register(url: missingURL, response: missingGET(_:))


  func testURLRequestTimeout1() throws
  { // time out a URL request via session configuration
#if os(Linux) && !swift(>=5.1.3)
    print("this test does not succeed due to a corelibs-foundation bug")
#else
    URLSessionResumeTests.configuration.timeoutIntervalForRequest = 1.0
