title: jenkins cant see summary of changes of build output
body: <p>We recently upgraded mercurial version and suddenly in my jenkins i can't see the changes  of the code in the build summary output of build's ..? I used to see the changes summary before the upgrade.. please find the <a href="https://i.stack.imgur.com/h1fB3.png" rel="nofollow noreferrer">attached image</a>   . please help me . My current jenkins version is 1.613 and  mercurial version is 3.7.3</p>