refs #18011 disable some newly failing tests on cpp windows; refs #17946 increase timeout for tchannels (#18012)

lib/system.nim

@@ -1317,10 +1317,10 @@ proc del*[T](x: var seq[T], i: Natural) {.noSideEffect.} =
   ##
   ## See also:
   ## * `delete <#delete,seq[T],Natural>`_ for preserving the order
-  ##
+  runnableExamples:
-  ## .. code-block:: Nim
+    var a = @[10, 11, 12, 13, 14]
-  ##  var i = @[1, 2, 3, 4, 5]
+    a.del(2)
-  ##  i.del(2) # => @[1, 2, 5, 4]
+    assert a == @[10, 11, 14, 13]
   let xl = x.len - 1
   movingCopy(x[i], x[xl])
   setLen(x, xl)

tests/cpp/temitlist.nim

@@ -1,7 +1,9 @@
 discard """
   targets: "cpp"
-  output: '''6.0
+  output: '''
+6.0
 0'''
+disabled: "windows" # pending bug #18011
 """
 
 # bug #4730

tests/cpp/tempty_generic_obj.nim

@@ -1,7 +1,9 @@
 discard """
   targets: "cpp"
-  output: '''int
+  output: '''
+int
 float'''
+disabled: "windows" # pending bug #18011
 """
 
 import typetraits

tests/exception/tcpp_imported_exc.nim

@@ -1,6 +1,7 @@
 discard """
 targets: "cpp"
-output: '''caught as std::exception
+output: '''
+caught as std::exception
 expected
 finally1
 finally2
@@ -12,6 +13,7 @@ finally 2
 expected
 cpp exception caught
 '''
+disabled: "windows" # pending bug #18011
 """
 
 type

tests/stdlib/tchannels.nim

@@ -1,5 +1,5 @@
 discard """
-  timeout:  20.0 # but typically < 1s (in isolation but other tests running in parallel can affect this since based on epochTime)
+  timeout:  60.0 # but typically < 1s (in isolation but other tests running in parallel can affect this since based on epochTime)
   disabled: "freebsd"
   matrix: "--gc:arc --threads:on; --gc:arc --threads:on -d:danger"
 """