Merge pull request swiftlang#2855 from compnerd/smoke-signals

Commands: remove `signalled` cases for Windows

Author: compnerd

Sources/Commands/SwiftTestTool.swift

@@ -666,8 +666,10 @@ final class TestRunner {
             switch result.exitStatus {
             case .terminated(code: 0):
                 success = true
+#if !os(Windows)
             case .signalled(let signal):
                 output += "\n" + exitSignalText(code: signal)
+#endif
             default: break
             }
         } catch {
@@ -687,8 +689,10 @@ final class TestRunner {
             switch result.exitStatus {
             case .terminated(code: 0):
                 return true
+#if !os(Windows)
             case .signalled(let signal):
                 print(exitSignalText(code: signal))
+#endif
             default: break
             }
         } catch {