Wget2 scares with 416 instead of letting user know about file being retrieved completely like Wget

First, have a look at this:

$ wget2 -c http://localhost/index.html
[0] Downloading 'http://localhost/index.html' ...
HTTP ERROR response 416 Requested Range Not Satisfiable [http://localhost/index.html]

Umm..

Now,

$ wget -c http://localhost/index.html
--2017-09-01 21:14:05--  http://localhost/index.html
Resolving localhost (localhost)... 127.0.0.1
Connecting to localhost (localhost)|127.0.0.1|:80... connected.
HTTP request sent, awaiting response... 416 Requested Range Not Satisfiable

    The file is already fully retrieved; nothing to do.

Comforting! Isn't it? ;)