make tests green again

compiler/sempass2.nim

@@ -806,7 +806,7 @@ proc track(tracked: PEffects, n: PNode) =
       track(tracked, n.sons[i])
     setLen(tracked.init, oldState)
   of nkObjConstr:
-    track(tracked, n.sons[0])
+    when false: track(tracked, n.sons[0])
     let oldFacts = tracked.guards.len
     for i in 1 .. <len(n):
       let x = n.sons[i]

web/news/e031_version_0_16_2.rst

@@ -99,7 +99,7 @@ remove the need for the ``newException`` template.
 the "declared but not used" warning. More details can be
 found `here <http://nim-lang.org/docs/manual.html#pragmas-used-pragma>`_.
 - The popular "colon block of statements" syntax is now also supported for
-  ``let`` and ``var`` statements:
+  ``let`` and ``var`` statements and assignments:
 
 .. code-block:: nim
   template ve(value, effect): untyped =