Adjust tests.

docs/contracts.rst

@@ -802,7 +802,7 @@ as topics. The event call above can be performed in the same way as
             log3(
                 bytes32(msg.value),
                 bytes32(0x50cb9fe53daa9737b786ab3646f04d0150dc50ef4e75f59509d83667ad5adb20),
-                bytes32(msg.sender),
+                bytes32(uint256(msg.sender)),
                 _id
             );
         }

docs/types.rst

@@ -762,7 +762,7 @@ Members
             // Create a dynamic byte array:
             bytes memory b = new bytes(200);
             for (uint i = 0; i < b.length; i++)
-                b[i] = byte(i);
+                b[i] = byte(uint8(i));
             return b;
         }
     }